Resource Type
Collection
Serial/Series Title
Senate document (United States. Congress. Senate)
239
60th Congress
238
United States Geological Survey Reports
29
U.S. Geological Survey bulletin
22
Series A--Economic geology
18
Series B--Descriptive geology
15
North American Fauna
14
United States Fish and Wildlife Service Reports
14
National Bureau of Standards Reports
9
Scientific papers (United States. National Bureau of Standards)
9
33 More