General Geology and Phosphate Deposits of Conception Del Oro District, Zacatecas, Mexico
Subtitle: Geologic Investigations in the American Republics.
Contributors: Robers, C.L.; Tavera, E.
Series: U.S. Geological Survey bulletin -- 1037A
Publisher: s.n
Published: 1956
Place of publication: S.l
Language: eng
Notes: 1