TY - BOOK AU - McCulloh,Thane Hubert TI - Gravimetric effects of petroleum accumulations: a preliminary summary, T2 - Geological Survey circular AV - QE75 .C5 no. 530 PY - 1966/// CY - Washington KW - Prospecting KW - Geophysical methods KW - Gravity KW - Measurement KW - Gravimeters (Geophysical instruments) KW - Petroleum N1 - Bibliography: p. 4 ER -