000 00273nam a2200121Ia 4500
008 211209s1974 xx 000 0 und d
041 _aeng
082 _a515.35 N74 SIM
100 _aSIMMONS GEORGE F
245 _aDIFFERENTIAL EQUATIONS
260 _c1974
300 _a463
999 _c10693
_d10693