000 004250000a22001450004500
008 140223b1977 xxu||||| |||| 00| 0 eng d
041 _aENG
080 _aB33 L7
082 _aB33 L7
100 _aBOYCE (William E.)
700 _aDIPRIMA (Richard C.)
245 _aElementary differential equations and boundary value problems Edn.3.
260 _aNew York
_bWiley
_c1977
650 _aDIFFERENTIAL AND INTEGRAL EQUATIONS
999 _c253625
_d253625