TY  - BOOK
AU  - Verma, Pramod K.
TI  - Optical mineralogy 
SN  - 978-93-8015-608-8
PY  - 2010///
CY  -  New Delhi
PB  - Ane Books
KW  - Alkali Feldspar GroupConoscopic ConditionCyclosilicatesInosilicatesLightMineralogyNepheline GroupNesosilicates
ER  -