Mineral resources of study areas contiguous to the Uncompahgre Primitive Area, San Juan Mountains, southwestern Colorado
Thomas August Steven
◽
P.W. Lipman
◽
F.S. Fisher
◽
C.L. Bieniewski
◽
H.C. Meeves
◽
...
Peter Popenoe
◽
Robert G. Luedke
Harald H. Mehnert
◽
John F. Slack
◽
Gerald T. Cebula
Philip Martin Bethke
◽
Robert O. Rye
Douglas B. Yager
◽
Peter W. Lipman
◽
David A. Sawyer