Environmental microthesaurus
An edition of Environmental microthesaurus (1977)
a hierarchical list of indexing used by NTIS
By United States. National Technical Information Service. Information Analysis Branch
Publish Date
1977
Publisher
U. S. Department of Commerce, National Technical Information Service
Language
eng
Pages
100
Description:
subjects: Human ecology, Subject headings, Ecology, Ecological research, Research
Places: United States