TY  - BOOK
AU  - Spurr,J.E.
TI  -      Political and commercial geology and the world's mineral resources
U1  - 553 SPU  
PY  - 1920///.
CY  - New York : 
PB  - McGraw-Hill Book Company, Inc., 
KW  - Mines and mineral resources
KW  - Geology, Economic
ER  -