TY  - BOOK
AU  - Winchell,Alexander N.(Newton)
TI  - Elements of optical mineralogy: an introduction to microscopic petrography 
U1  - 549 
PY  - 1928///-1939
CY  - New York
PB  - Wiley
KW  - Mineralogy, Determinative
N1  - pt. I. Principles and methods. 3d ed., rev. and enl.- pt. II. Descriptions of minerals. 3d ed.- pt. III. Determinative tables. 2d ed., 2d print
ER  -