TY  - GEN
AU  - Cox, K. G.
TI  - An introduction to the practical study of crystals and minerals and rocks
SN  - 0071001735
U1  - 549 
PY  - 1988///
CY  - London
PB  - McGraw-Hill Book Company
KW  - Minerals and rocks
N1  - Includes references and index
ER  -