TY  - BOOK
AU  - UNITED STATES DEPARTMENT OF THE INTERIOR
TI  - MINERALS YEARBOOK 1939
T2  - 0
U1  - 050.549 
PY  - 1939///
CY  - WASHINGTON-USA
PB  - U.S.GOVERNM.PRINT.OFFICE
KW  - OBRAS GENERALES
N1  - ESTADISTICA-MINERALES/ILUSTRACIONES-MAPAS
ER  -