000 00332nam a2200133Ia 4500
008 140314s9999 xx 000 0 eng d
082 _a1/2/203
100 _aL.Pontrriaguine .
_916891
245 _aEquations differentielles drdinaires \
245 _cL.Pontrriaguine .
260 _c1989 .
300 _a470p.
942 _2ddc
_cBK
999 _c41745
_d41745