WINCHELL, ALEXANDER N.
Elements of optical mineralogy; an introduction to microscopic petrography. Pt.3. 2d ed.
WINCHELL, ALEXANDER N. Elements of optical mineralogy; an introduction to microscopic petrography. Pt.3. 2d ed. © 12Sep39; A133263. Horace Winchell (C); 27Jan67; R402203.
Horace Winchell|C