TY  - BOOK
AU  - Cox K G
AU  -  Harte B
AU  -  Prine N B
TI  - Introdunction to the practical study of crystals, minerals and rocks
U1  - H, K71;1 
PY  - 1967///
KW  -  Geology
KW  -  Minerals
KW  -  Rocks
KW  - Crystal
ER  -