TY  - BOOK
AU  - Dietrich,R.V.
TI  - Stones: their collection, identification, and uses 
T2  - A Series of books in geology
SN  - 0716711389
PY  - 1980///
CY  - San Francisco
PB  - W. H. Freeman
KW  - Rocks
KW  - Stone
N1  - Includes index; Bibliography : p.135-138
ER  -