Manual of classification of agricultural and forestry research Classifications used in the current research information system by activity, by commodity, resource or technology, by field of science, and by research problem area (RPA)
AGROVOC关键词
书目信息
卷
1970
其它主题
Forests and forestry
语言
英语
注释
U.S. Department of Agriculture, National Agricultural Library 1970 - Content source: AGL
类型
Book
团体作者
United States. Agricultural Research Policy Advisory Committee. Research Classification Subcommittee.
United States. Department of Agriculture. Science and Education Staff.
2021-06-15
AGRIS AP
