TY  - BOOK
AU  - Sinkankas,John
TI  - Prospecting For Gemstones And Minerals
SN  - 0442076193
U1  - 622.18 23
PY  - 1970///
CY  - New York
PB  - Van Nostrand Reinhold Company
KW  - Precious stones
KW  - Mineralogy
N1  - First ed. published in 1961 under title: Gemstones and minerals: how and where to find them; Includes bibliographical references (p.: 380 - 387 ), indexs ( p.: 389 - 397)
ER  -