TY  - BOOK
ED  - UNITED STATES DEPARTMENT OF THE INTERIOR
TI  - MINERALS YEARBOOK
SN  - 0160358205
U1  - 549 
PY  - 1989///
CY  - Estados Unidos
PB  - UNITED STATES DEPARTMENT OF THE IINTERIOR BUREAU OF MINES
N1  - DONADO POR EL ING NUÑEZ DEL ARCO
ER  -