00330nam a2200121 a 4500008004100000020001500041050001700056100001700073245005400090260003800144300001700182350000900199120416s1987    ||||||||||||||||| ||    u  a0748703853  aQA 76.55 Bra  aBradley, Ray10aUnderstanding computer science for advanced level  aCheltenhambStanley Thornesc1987  a464p. : ill.  a0.00