Environmental micro thesaurus: A hierarchical list of indexing terms used by NITS
Environmental micro thesaurus: A hierarchical list of indexing terms used by NITS
/ National Technical Information service & Environmental Protection Agency
- National Technical Information service & Environmental Protection Agency, 1977
- 100p.
Science
Environmental
D 502.55:025.43 / L7
Science
Environmental
D 502.55:025.43 / L7