000 00326nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a621.3819642 P844
100 _aPORTER.A.G
245 0 _aBASIC SUBROUTINES FOR THE IBM PC AND PC JR.
260 _aMASSACHUSETTS
_bAddison Wesley
_c1985
300 _a24X19
942 _cBK
_2DDC
999 _c21171
_d21171