Blalock, Grover C. Principles of electrical Engineering : theory and practice / Grover C. Blalock. - 3rd ed. - London : McGraw-Hill book, c 1950. - xvii, 605 p. ; 20 cm. include index 322 322 Subjects--Topical Terms: Electrical Engineering. Dewey Class. No.: 621.3 / B589p