TY  - BOOK
AU  - Borner Rudolf
TI  - Minerals, rocks, and gemstones. Ed and Tr by W Myk
U1  - H2, K2 
PY  - 1962///
CY  - Edingurgh
PB  - Oliver and Boyd        
KW  - Geology
N1  - Bib p. 239-40
ER  -