Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W1593583383', 'doi': None, 'title': 'Development of tree crop production in Southern Nigeria.', 'display_name': 'Development of tree crop production in Southern Nigeria.', 'publication_year': 1973, 'publication_date': '1973-01-01', 'ids': {'openalex': 'https://openalex.org/W1593583383', 'mag': '1593583383'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/cabdirect/abstract/19731806325?start=200', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S2764824833', 'display_name': 'World Crops', 'issn_l': '0043-8391', 'issn': ['0043-8391'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/P4310320108', 'host_organization_name': 'Springer Nature (Netherlands)', 'host_organization_lineage': ['https://openalex.org/P4310319965', 'https://openalex.org/P4310320108'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Nature (Netherlands)'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': [], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5014282495', 'display_name': 'Martin Upton', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': True, 'raw_author_name': 'M. Upton', 'raw_affiliation_strings': [], 'affiliations': []}], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': ['https://openalex.org/A5014282495'], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': False, 'cited_by_count': 0, 'citation_normalized_percentile': {'value': 0.0, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 0, 'max': 57}, 'biblio': {'volume': '25', 'issue': '3', 'first_page': '152', 'last_page': '156'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12630', 'display_name': 'Agroforestry Tree Domestication in Africa', 'score': 0.3616, 'subfield': {'id': 'https://openalex.org/subfields/1107', 'display_name': 'Forestry'}, 'field': {'id': 'https://openalex.org/fields/11', 'display_name': 'Agricultural and Biological Sciences'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, 'topics': [{'id': 'https://openalex.org/T12630', 'display_name': 'Agroforestry Tree Domestication in Africa', 'score': 0.3616, 'subfield': {'id': 'https://openalex.org/subfields/1107', 'display_name': 'Forestry'}, 'field': {'id': 'https://openalex.org/fields/11', 'display_name': 'Agricultural and Biological Sciences'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, {'id': 'https://openalex.org/T13009', 'display_name': 'Agroforestry Systems and Biodiversity Enhancement', 'score': 0.3479, 'subfield': {'id': 'https://openalex.org/subfields/1107', 'display_name': 'Forestry'}, 'field': {'id': 'https://openalex.org/fields/11', 'display_name': 'Agricultural and Biological Sciences'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, {'id': 'https://openalex.org/T13396', 'display_name': 'Evolution and Sustainability of Livestock Farming Systems', 'score': 0.3224, 'subfield': {'id': 'https://openalex.org/subfields/1105', 'display_name': 'Ecology, Evolution, Behavior and Systematics'}, 'field': {'id': 'https://openalex.org/fields/11', 'display_name': 'Agricultural and Biological Sciences'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/crop-production', 'display_name': 'Crop production', 'score': 0.6175331}, {'id': 'https://openalex.org/keywords/tree-domestication', 'display_name': 'Tree Domestication', 'score': 0.548833}, {'id': 'https://openalex.org/keywords/tree', 'display_name': 'Tree (set theory)', 'score': 0.5290702}, {'id': 'https://openalex.org/keywords/tree-crop-interactions', 'display_name': 'Tree-Crop Interactions', 'score': 0.523048}, {'id': 'https://openalex.org/keywords/agricultural-development', 'display_name': 'Agricultural Development', 'score': 0.507574}], 'concepts': [{'id': 'https://openalex.org/C54286561', 'wikidata': 'https://www.wikidata.org/wiki/Q397350', 'display_name': 'Agroforestry', 'level': 1, 'score': 0.6491728}, {'id': 'https://openalex.org/C2989409935', 'wikidata': 'https://www.wikidata.org/wiki/Q11451', 'display_name': 'Crop production', 'level': 3, 'score': 0.6175331}, {'id': 'https://openalex.org/C137580998', 'wikidata': 'https://www.wikidata.org/wiki/Q235352', 'display_name': 'Crop', 'level': 2, 'score': 0.5995557}, {'id': 'https://openalex.org/C113174947', 'wikidata': 'https://www.wikidata.org/wiki/Q2859736', 'display_name': 'Tree (set theory)', 'level': 2, 'score': 0.5290702}, {'id': 'https://openalex.org/C2778348673', 'wikidata': 'https://www.wikidata.org/wiki/Q739302', 'display_name': 'Production (economics)', 'level': 2, 'score': 0.5243119}, {'id': 'https://openalex.org/C205649164', 'wikidata': 'https://www.wikidata.org/wiki/Q1071', 'display_name': 'Geography', 'level': 0, 'score': 0.46601298}, {'id': 'https://openalex.org/C6557445', 'wikidata': 'https://www.wikidata.org/wiki/Q173113', 'display_name': 'Agronomy', 'level': 1, 'score': 0.36670667}, {'id': 'https://openalex.org/C97137747', 'wikidata': 'https://www.wikidata.org/wiki/Q38112', 'display_name': 'Forestry', 'level': 1, 'score': 0.2378253}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.236478}, {'id': 'https://openalex.org/C118518473', 'wikidata': 'https://www.wikidata.org/wiki/Q11451', 'display_name': 'Agriculture', 'level': 2, 'score': 0.20963317}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.15888765}, {'id': 'https://openalex.org/C166957645', 'wikidata': 'https://www.wikidata.org/wiki/Q23498', 'display_name': 'Archaeology', 'level': 1, 'score': 0.06758118}, {'id': 'https://openalex.org/C162324750', 'wikidata': 'https://www.wikidata.org/wiki/Q8134', 'display_name': 'Economics', 'level': 0, 'score': 0.066645}, {'id': 'https://openalex.org/C134306372', 'wikidata': 'https://www.wikidata.org/wiki/Q7754', 'display_name': 'Mathematical analysis', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C139719470', 'wikidata': 'https://www.wikidata.org/wiki/Q39680', 'display_name': 'Macroeconomics', 'level': 1, 'score': 0.0}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/cabdirect/abstract/19731806325?start=200', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S2764824833', 'display_name': 'World Crops', 'issn_l': '0043-8391', 'issn': ['0043-8391'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/P4310320108', 'host_organization_name': 'Springer Nature (Netherlands)', 'host_organization_lineage': ['https://openalex.org/P4310319965', 'https://openalex.org/P4310320108'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Nature (Netherlands)'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'id': 'https://metadata.un.org/sdg/2', 'display_name': 'Zero hunger', 'score': 0.81}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W951504069', 'https://openalex.org/W8800518', 'https://openalex.org/W768632957', 'https://openalex.org/W584759597', 'https://openalex.org/W582442093', 'https://openalex.org/W567743232', 'https://openalex.org/W322622519', 'https://openalex.org/W302381144', 'https://openalex.org/W234245750', 'https://openalex.org/W232000454', 'https://openalex.org/W2259596849', 'https://openalex.org/W2232893746', 'https://openalex.org/W2219620970', 'https://openalex.org/W212003406', 'https://openalex.org/W1820611406', 'https://openalex.org/W1721362966', 'https://openalex.org/W1526838264', 'https://openalex.org/W1422431880', 'https://openalex.org/W1408553359', 'https://openalex.org/W1139143027'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1593583383', 'counts_by_year': [], 'updated_date': '2024-08-21T10:11:35.981709', 'created_date': '2016-06-24'}