1
2
3
4
Published 1952
“...Geological Survey (U.S.)...”
Government Document
Book
5
6
7
8
9
10
11
12
13
14
15
Published 1984
“...Geological Survey (U.S.)...”U.S. geological survey professional papers
Government Document
Serial
16
17
18
19
20
Published 1980
“...Geological Survey (U.S.)...”
Book