000 00322nam a2200121Ia 4500
008 170912s9999 xx 000 0 und d
082 _a515.3 PIA/D PIA/A
100 _aPIAGGID H T H
245 3 _aAN ELEMENTARY TREATISE ON DIFFERENTIAL EQUATIONS
260 _bOXFORD UNIVERSITY PRESS
_c1950
300 _a256
942 _cTB
999 _c24118
_d24118