TY  - BOOK
AU  - Greenbaum,Walter W.
TI  - The gemstone identifier
SN  - 0133474445
U1  - 553.8 23
PY  - 1983///
CY  - New York : 
PB  - Prentice Hall Press , 
KW  - Precious stones - Handbooks, manuals. etc
ER  -