000 00314nam a2200145Ia 4500
008 190201s9999 xx 000 0 und d
082 _a515
082 _bAYR
100 _a"Ayres,Frank"
245 0 _aTheory And Problems of D
260 _aNew Delhi
260 _bMcGraw Hill
260 _c1981
300 _a346
999 _c20687
_d20687