00580nam a22002057a 4500003000600000005001700006008004100023020001500064040001400079082001600093100002400109245006000133250001200193260003300205300003800238500001800276650002700294650002800321700002500349GCWUF20180403073311.0180403b        xxu||||| |||| 00| 0 eng d  a9814126500  bENGcMAIN  a515.35bBOY  a Boyce, William E.;  aElementary differential equations/c Boyce, William E.;  a7th ed.  aNew York : b Wiley, c1992.  axvi,592 p. :bill ;c25 cm.fP.B.  aInclude Index  aDifferential equations  vBoundary value problems  a DiPrima, Richard C.