00533nam a22001577a 4500008004100000020001800041050002100059100002500080245007600105250001200181260004900193300003500242521005100277650002700328700002000355170209b        xxu||||| |||| 00| 0 eng d  a9780201808759  aQA 371 .N34 1989  aNagle, Kent R.d1989  aFundamentals of differential equations/cR. Kent Nagle, Edward B. Saff.  a4th ed.  aSingapore:bAddison wesley publisher,c1989.  axx, 657, [42]p.:bill.;c24cm.  aIncludes bibliographical references and index.  aDifferential equation.  aSaff, Edward B.