TY - BOOK AU - Dickey,Parke Atherton TI - Electrical well logging in the eastern states, T2 - Pennsylvania. Topographic and geologic survey. Progress report 129 AV - QE157 .A293 no. 129 U1 - (557.48) 622.338 PY - 1942/// CY - [Harrisburg] KW - Oil well drilling KW - Petroleum KW - Geology KW - United States KW - Prospecting KW - Geophysical methods N1 - At head of title: Commonwealth of Pennsylvania. Dept. of internal affairs ... Topographic and geologic survey ER -