000 00301nam a2200121Ia 4500
008 170912s9999 xx 000 0 und d
082 _a515.3 KEL/E LYM/E
100 _aLYMAN M KELLS
245 0 _aELEMENTARY DIFFERENTIAL EQUATIONS
260 _bPRAGATI PRAKASHAN
_c1954
300 _a266
942 _cTB
999 _c24127
_d24127