A directory of research natural areas on Federal lands of the United States of America.
Contributors: United States. Forest Service.; National Science Foundation (U.S.); Nature Conservancy (U.S.)
Publisher: Agriculture Dept., Forest Service
Published: 1977
Place of publication: Washington
Language: eng
Number of pages: 280
Subjects: Research natural areas -- United States -- Directories.
Genres: Directories.
Other titles: Research natural areas on Federal lands of the United States of America.
Notes: Compilation and computerization of data by the Nature Conservancy were supported by the National Science Foundation contract no. BMS-75-20321.

Expands and updates the 1968 edition and the 1972 addendum.

Bibliography: p. 277-280.