TY  - BOOK
AU  - Zim,Herbert S.
AU  - Shaffer,Paul R.
AU  - Perlman,Raymond
TI  - Rocks and Minerals: A Guide to Familiar Minerals, Gems, Ores, and Rocks 
SN  - 0-307-24499-7
PY  - 1957///
CY  - New York
PB  - Golden Press
KW  - Geological sciences
KW  - Mineralogy
ER  -