Earp, Unus Fulton, 1915- Rural electrification engineering / Unus F. Earp. - New York : McGraw-Hill, 1950 - ix, 313 p. : ill. ; 24 cm. - McGraw-Hill publications in agricultural engineering. . Includes bibliographical references and index. Subjects--Topical Terms: Rural electrification. Dewey Class. No.: 621.393