00479nam a2200157Ia 4500 90311 BIBL 20160527204643.0 711119s1970 xx 000 0 eng u 77133799 Wels, Byron G. 290278 Local Computer circuits & how they work Byron Wels. Blue Ridge Summit, Pa., G/L Tab Books 1970. 188 p. illus. 22 cm. Electronic digital computers Circuits. 91184 Local 73557 73557 0 0 0 621_381900000000000_W458C 0 evl 372436 10 10 1 2016-05-27 142524 0 621.3819 W458c 80000000733256 2016-05-27 00:00:00 r:90311 z:NCC:D 6