00429nam 2200691 4500001000400000003002300004005000900027008004100036082000800077072002400085100001500109260001500124250000600139245003000145650002400175650002500199650002500224691StarLibrary Marc Built20180430201711 ||||| |||||||||||amh  a004 adata communications aBrian west bBPB c1992 a4 aBasic comuting principles adata communications adata storage devices amicros to mainframes