000 00306nam a2200121Ia 4500
008 220201s1985 xx 000 0 eng d
082 _a004
_bWAL
100 _aWalker, Roger S
245 0 _aUnderstanding computers science applications
260 _bTexas Instruments
_c1985
300 _a284
942 _2ddc
999 _c84955
_d84955