00944nam a2200289 i 450099100130890970753620020507114204.0970307s1971 uk ||| | eng b10202572-39ule_instLE00645600ExLDip.to Fisicaita510.68621.3.8621.3.9621.3.9.1Bull, G.M.464361Time-sharing systems /G.M. Bull, S.F.G. PackhamLondon :McGraw-Hill Book Co.,1971x, 139 p. ;24 cm.European computer science seriesPackham, S.F.G..b1020257217-02-1727-06-02991001308909707536LE006 621.3.9.1 BUL12006000010467le006-E0.00-l- 00000.i1025042627-06-02Time-sharing systems192514UNISALENTOle00601-01-97ma -enguk 01