Campbell, George A. 1870-1954. Fourier integrals for practical applications / by George A. Campbell and Ronald M. Foster. - New York, NY ; London : D. Van Nostrand Co. 1948 [reprinted 1957]. - iii, 177 p. : ill.; 24 cm. Subjects--Topical Terms: Fourier series. Dewey Class. No.: 517.35 / CAF 1957