Geology of the Duck Creek Pass quadrangle Montana : contributions to general geology /

Autor Nelson, Willis H. 1920-2010
Vydáno 1963

Geology of the Christmas quadrangle, Gila and Pinal Counties, Arizona /

Autor Willden, Ronald
Vydáno 1964

Geology of Precambrian rocks, Idaho Springs district, Colorado /

Autor Moench, Robert H.
Vydáno 1964