01163cam a22002891 4500 gs 41000114 DLC 20260227111346.0 780208s1941 paub s000 0 eng c gs 41000114 (OCoLC)3616593 U.S. Geol. Survey Libr. NcRS NcRS OCoLC DLC premarc GB1025.P4 L624 551.4909748 PY G345/4.3 W7 padocs Lohman, Stanley William, 1907- Ground-water resources of Pennsylvania, by Stanley W. Lohman. Prepared in cooperation between the Geological Survey, United States Department of the Interior, and the Pennsylvania Topographic and Geologic Survey. Harrisburg, Pa., Dept. of Internal Affairs, Topographic and Geologic Survey, 1941. vi, 32 p. fold. map 24 cm. Pennsylvania. Topographic and Geologic Survey. Bulletin W7 At head of title: Pennsylvania Geologic Survey, fourth series. Groundwater Pennsylvania. Water-supply Pennsylvania. Geological Survey (U.S.) Bulletin W, 7. 27724 27724