000			00374cam a22001337a 4500
008			180718b1971 xxu||||| |||| 00| 0 eng d
082			_aI5371 B872
100			_aBull, G.M.
245			_aTime-sharing systems _cby G.M. Bull and S.F.G. Packham
260			_aLondon _bMcGraw-Hill _c1971
300			_a140p.
650			_aTime-sharing computer systems
700			_aPackhm, S.F.G.
999			_c342933 _d342933