6 treff

Minnesota's rocks and waters : a geological story
Schwartz, George Melvin
Bok Engelsk 1963
The Geology of the Metamorphosed Biwabik Iron-Formation, Eastern Mesabi District, Minnesota
Gundersen, James Novotny
Bok Engelsk 1962
The geology of Cook County, Minnesota
by Frank F. Grout, Robert P.Sharp, George...
Bok Engelsk 1959
Minnesota's rocks and waters : a geological story
Schwartz, George Melvin
Bok Engelsk 1954
Geology of the San Manuel copper deposit, Arizona
Schwartz, George Melvin
Bok Engelsk 1953
The geology of the Duluth metropolitan area
Schwartz, George Melvin
Bok Engelsk 1949