00896cam a22002651 4500 gs 51000056 DLC 20260227111357.0 921214s1949 iduf s000 0 eng c gs 51000056 (OCoLC)27117085 U.S. Geol. Survey. Libr. CLU CLU DLC premarc TN24.I2 A43 no. 86 Prater, Lewis Seward, 1915- Microscopic studies on mill products from the Pine Creek Area, Yreka Mining District, Idaho. Moscow, University of Idaho, 1949. 2 l. 3 plates. 28 cm. Idaho. Bureau of Mines and Geology. Pamphlet, no. 86 Cover title. Microscopes. Metallography. Pine Creek Area, Yreka Mining District, Idaho. Idaho Bureau of Mines and Geology. Pamphlet ; no. 86. 28526 28526