Geological Survey manual
By: Department of the Interior.
Contributors: Geological Survey (U.S.)
Publisher: U.S. G.P.O.]
Published: 1987
Place of publication: [Washington
Language: eng
Subjects: Geological Survey (U.S.) -- Handbooks, manuals, etc.
Notes: Running title.

"May 1, 1987."

Loose-leaf for updating.

Includes index.