TY  - BOOK
AU  - READ
TI  - RUTLEYS ELEMENTS OF MINERALOGY
T2  - 0
U1  - 549 
PY  - 1976///
CY  - LONDON-U.S.A.
PB  - THOMAS MURBY
KW  - CIENCIAS PURAS
N1  - OPTICAL PROPERTIES/OCCURENCE
ER  -