Richter, H. P. 1900-1978. Practical electrical wiring : residential, farm, and industrial : based on the 1990 national electrical code / H.P. Richter, W. Creighton Schwan. - 15th ed. - New York : McGraw-Hill Book Co., c1990. - ix, 645 p. : ill. ; 21 cm. Includes bibliographical references. ISBN: 0070523932 : $32.95 LCCN: 89013526 Subjects--Topical Terms: Electric wiring, Interior. LC Class. No.: TK3271 / .R48 1990 Dewey Class. No.: 621.319/24