000 00276nam a2200121Ia 4500
008 190719s9999 xx 000 0 und d
082 _a517.38 A985
100 _aAYRES.F
245 0 _aDIFFERENTIAL EQUATIONS
260 _bNEW YORK
_c1952
300 _a28X21
942 _cBK
_2DDC
999 _c45432
_d45432