Francis, Thomas George. Electrical installation work / T. G. Francis. - 5th ed. - Harlow, Longmans, c1971.. - xxii, 337 p. illus. 22 cm. Includes index. English. LCCN: 70505726 Nat. Bib. No.: B68-24118 Subjects--Topical Terms: Electric wiring, Interior. LC Class. No.: TK3201 / .F7 1968 Dewey Class. No.: 621.3/FRE