TY  - BOOK
AU  - Winchell,Alexander N.
AU  - Winchell,Horace
ED  - Chapman and Hall
ED  - C. Wiley & Co.
TI  - Elements of optical mineralogy: an introduction to microscopic petrography 
T2  - Elements of optical mineralogy. IIDescriptions of minerals
U1  - 549.1 
PY  - 1951///.
CY  - New York: , London
PB  - John Wiley & sons, , Chapman & Hall
KW  - Optical mineralogy
N1  - Includes index (p. 533-551)
ER  -