TY  - BOOK
AU  - Govett G J S Ed.
AU  -  Govett M H Ed.
TI  - World mineral supplies: assessment and perspective
T2  - Development in economic geology; 3
U1  - H7, L6-;1-;2 
PY  - 1976///
CY  - Amsterdam
PB  - Elsevier Scientific        
KW  - Geology
ER  -