Lovelace, Trevor Arthur, 1930- Lovelace, Trevor Arthur, 1930- Engineering principles / [by] T.A. Lovelace, [illustrations by Colin Rattray]. - London : Nelson, 1970- - Electrical and electronics technicians series . ISBN: 0177411082(v.1) 30/- (v. 1) LCCN: 70529357 Nat. Bib. No.: B70-21128 (v. 1) Subjects--Topical Terms: Electric engineering. LC Class. No.: TK146 / .L763 Dewey Class. No.: 621.3