000			00345pam a2200157a 44500
008			230515b1990 xxu||||| |||| 00| 0 eng d
020			_aNULL
041			_aENGLISH
082			_aN.D.
100			_aDeitel H M.
245			_aOperting Systems
250			_a0
260			_aNULL _bAddison -wesley Pub. _c1990
300			_a853
650			_aNULL
999			_c575354 _d575354