TY  - BOOK
AU  - Sinkankas,John
TI  - Gemstones and minerals,: how and where to find them
AV  - QE392 .S63
U1  - 549 19
PY  - 1961///]
CY  - Princeton, N.J.
PB  - Van Nostrand
KW  - Gems
KW  - Pedras preciosas
KW  - Precious stones
ER  -