Geology of the Little Belt Mountains, Montana: With Notes On the Mineral Deposits of the Neihart, Barker, Yogo, and Other Districts
Louis Valentine Pirsson
Louis Valentine Pirsson
A Text-book Of Geology: For Use In Universities, Colleges, Schools Of Science, Etc., And For The General Reader. Part I. Physical Geology; Vol
Louis Valentine PirssonQuantitative Classification of Igneous Rocks: Based On Chemical and Mineral Characters, With a Systematic Nomenclature
Louis Valentine Pirsson