000 00294nam a2200121Ia 4500
008 211126s9999 xx 000 0 und d
082 _a515.352
100 _aFRANK AYRES JR
245 0 _aTHEORY AND PROBLEMS OF DIFFERENTIAL EQUATIONS
260 _bM.G.H
365 _b356.00
942 _cBTECH
999 _c125884
_d125884