00336nam 2208484 45000010005000000030023000050050009000280080041000370820008000781000022000862600048001083000015001562450033001718484StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a004 aDonald D. Spencer bColumbus: Merrill Publishing Company c1986 a348p: 28cm aComputers bAn Introduction