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 : A golden nature guide 
PY  - 1957///
CY  - New York
PB  - Golden Press
KW  - Mineralogy
ER  -