Environmental microthesaurus a hierarchical list of indexing terms used by NTIS

Environmental microthesaurus a hierarchical list of indexing terms used by NTIS

Библиографические подробности
Корпоративные авторы: United States. National Technical Information Service, United States. Environmental Protection Agency
Формат: ‌
Язык:English
Опубликовано: Springfield, Va. The Branch 1977.
Предметы:
Subject headings > Environmental engineering.
Subject headings > Ecology.