000 00330nam a2200121Ia 4500
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082 _a517.38 N4368
100 _aNEMYTSKII.V.V
245 0 _aQUALITATIVE THEORY OF DIFFERENTIAL EQUATIONS
260 _bPRINCETON UNIVERSITY PRESS, NEW JERSEY
_c1960
300 _a23X15
942 _cBK
999 _c62096
_d62096