00281nam a2200109 a 4500008004100000050001700041100002000058245003300078260003400111300001700145350000900162120416s1968    ||||||||||||||||| ||    u  aQA 267.5 Zac  aZacharov, Basil10aDigital Systems and circuits  aLondonbAllen and Unwinc1968  a160p. : ill.  a0.00