TY  - BOOK
AU  - Fries,Carl
ED  - Geological Survey (U.S.)
TI  - Los yacimientos de calcita óptica de la República Mexicana
AV  - TN28 .C65 no. 16
PY  - 1948///
CY  - Mexico
KW  - Calcite
KW  - Mines and mineral resources
KW  - Mexico
N1  - Issued in English under title: Optical calcite deposits of the Republic of Mexico (U. S. Geological Survey Bulletin 954-D); Bibliographical footnotes
ER  -