00925cam a22002411i 4500 gs 39000194 DLC 20260227111344.0 790706s1939 pauab s000 0 eng gs 39000194 (OCoLC)5144332 DLC MsSM DLC premarc TN24.P4 M9 338.2 Myers, W. M. (William Marsh), 1892-1951. ... Problems and trends in the mineral industries of Pennsylvania / by W. M. Myers ... State College, Pa., School of Mineral Industries, The Pennsylvania State College, 1939. xiv, 77 p. illus. (map) tables, diagrs. 23 cm. Pennsylvania. State College. Mineral Industries Experiment Station. Bulletin 17 [i.e. 27] The Pennsylvania state college bulletin, vol. 33, no. 34, June 26, 1939 Mineral industries Pennsylvania. 27561 27561