000 00309nam a2200121Ia 4500
008 220201s1954 xx 000 0 eng d
082 _bLAN
100 _aLanger, rudolph
245 2 _aA first course in ordinary Differential equations
260 _aTokyo
_bToppan Co,ltd
_c1954
300 _a249
942 _2ddc
999 _c20706
_d20706