Biodiversity Heritage Library
By "United States. Environmental Science Services Administration. "
ESSA science and engineering, July 13, 1965 to June 30, 1967.
By: United States. Environmental Science Services Administration.
Publication info: [Washington :For sale by the Supt. of Docs., U.S. Govt. Print. Off.],1968.
Contributed by: Penn State University (archive.org)