TY  - BOOK
AU  - Dietrich,R.V.
TI  - Stones: Their collection, identification, and uses 
SN  - 0716711399
AV  - QE431.2 D54
PY  - 1980///
CY  - San Francisco
PB  - W. H. Freeman
KW  - Rocas
KW  - Piedra
ER  -