Suggestions to authors of the reports of the United States Geological Survey.

Sonraí bibleagrafaíochta
Údar corparáideach: United States Geological Survey
Formáid: LEABHAR
Teanga:English
Foilsithe / Cruthaithe: Washington U.S. Govt. Print. Off. 1978.
Eagrán:6th ed.
Ábhair: