00556nam a22001457a 4500 0 0 0 0 RIU RIU 2012-07-26 Purchased: Vanguard Books 135.00 0 621.381 ELE 0625 2012-07-26 00:00:00 1 2019-02-21 BK Vol. 7 2861 2861 (pbk) 621.381 ELE EFY Enterprises Electronics projects New Delhi EFY Enterprises 1995 136 p. :ill. ; 27 cm. Vol.7 A collection of creative constructions projects and circuits ideas published in electronics for you during 1986. Engineering Electronic phone lock Digital tachometer Multiway switches Headphone amplifier Electronics FEAS BK