TY  - BOOK
AU  - Govett,G.J.S.
AU  - Govett,M.H.
TI  - World mineral supplies: assessment and perspective 
SN  - 0444413669 (American Elsevier) :
U1  - 553 
PY  - 1976///
CY  - Amsterdam, New York
PB  - Elsevier Scientific Pub. Co.
KW  - Mines and mineral resources
N1  - Includes bibliographies and index
ER  -