TY  - BOOK
AU  - Voskuil,Walter Henry
TI  - Minerals in world industry
AV  - HD9506.A2 V6
U1  - 549 
PY  - 1955///
CY  - New York
PB  - McGraw-Hill
KW  - Mineral industries
KW  - Mines and mineral resources
N1  - Includes bibliographies
ER  -