000 00335nam a2200109Ia 45e0
008 181001s1968 xx 000 0 und d
100 _aRitger P.D.
245 0 _aDifferential equations with application
260 _aLondon
_bG.H. Book com.
_c1968
300 _a545
942 _2ddc
_cBK
999 _c3872
_d3872