000 00256nam a2200109Ia 4500
020 _a817758555X
082 _a005.42
100 _aBECK,, LELAND
245 _aSYSTEM SOFTWARE : AN INTRODUCTION TO SYSTEMS PROGRAMMING
260 _aND
_b PHI
_c2007
942 _cBK
999 _c1924
_d1924