(Q63870572)
Statements
1983
4 references
U.S. Geological Survey Bulletin (English)
7 references
3 references
2 references
4 references
Washington, D.C.
1 reference
2 references
557.3
1 reference
QE75 .B9
1 reference
Identifiers
1 reference
U.S. Geological Survey bulletin
7 references
3 references
U.S. Geol. Surv. Bull.
2 references
1 reference
1 reference
1 reference