TY  - BOOK
AU  - O'Donoghue,Michael
TI  - Encyclopedia of minerals and gemstones
SN  - 0399117539
PY  - 1976///
CY  - New York
PB  - Putnam
KW  - Mineralogy
KW  - Precious stones
N1  - Includes index; Bibliography: p. 296-297
ER  -