TY  - BOOK
AU  - Winchell,N.H.
AU  - Winchell,Alexander Newton
TI  - Elements of optical mineralogy: an introduction to microscopic petrography,
AV  - QE367 .W75 1922
U1  - 549.1 19
PY  - 1922///-29
CY  - New York
PB  - John Wiley & sons, inc.; [etc., etc.]
KW  - Optical mineralogy
KW  - Mineralogia óptica
N1  - pt. I. Principles and methods.--pt. II. Descriptions of minerals.--pt. III. Determinative tables
ER  -