000 00294nam a2200109Ia 4500
008 211209s1952 xx 000 0 und d
041 _aeng
082 _a515.35 N52 PIA
100 _aPIAGGIO H J H
245 _aELEMENTARY TREATISE ON DIFFERENTIAL EQUATIONS AND THEIR APPLICATIONS
260 _c1952
999 _c1759
_d1759