Editore: Division of Mines, 1950
Da: Black and Read Books, Music & Games, Arvada, CO, U.S.A.
Soft cover. Condizione: Very Good. A VG, staple-bound pamphlet. This 31-page, stand-alone preprint--the relevant issue of the California Journal of Mines and Geology is NOT included--is clean and securely bound. The printed paper wrapper has a tear/near chip in the rear and a fore-edge chip in the front.