TY  - BOOK
AU  - Werner Abraham Gottlob
TI  - Short classification and description of the various rocks
U1  - H2:11, L1 
PY  - 1971///
CY  - New York    
PB  -  Hafner        
KW  -  Petrology
KW  - Geology
N1  - Appendix 145-175p
ER  -