S. K. Obuya Electrical principles for technicians : Theory, worked-out examples and tutorial problems with answers / S. K. Obuya - Nairobi ; East Africa educational pub. 1993 - 187 pages : illustrations ; 25 cm. - Newnes-Butterworths technician series . ISBN: 9966467629 £3.25 LCCN: 77030611 Nat. Bib. No.: GB78 LC Class. No.: QC 530 / .O2 1993 VOL.2 Dewey Class. No.: 621.3