TY - BOOK AU - Bird,J.O. AU - May,A.J.C. TI - Mathematics for electrical technicians levels 4 and 5 T2 - Longman technician series : Mathematics and sciences SN - 0582417600 PY - 1981/// CY - London ; , New York : PB - Longman, KW - Electrical engineering KW - Mathematics N1 - Cataloging based on CIP information; Includes index ER -