Sumner, John Stewart, 1921- Principles of induced polarization for geophysical exploration/ J. S. Sumner. - Amsterdam: Elsevier Science, 1976. - eiv,277 p. : ill. ; 25 cm. - Developments in economic geology ; 5. . Bibliography: p. 257-262. ISBN: 0444414819 Subjects--Topical Terms: Prospecting--Geophysical methods.