TY  - BOOK
AU  - McCaskey,H.D.
AU  - Clark,Martha B.
TI  - Mineral production of the United States in 1917
T2  - Mineral Resources of the United States, 1917-Part I
U1  - 547 
PY  - 1920///
CY  - Washington, D.C.
PB  - Government Printing Office
KW  - MINERIA
KW  - PRODUCCION DE MINERALES
N1  - Impreso
ER  -