Boyce, William E. <br/><br/>
Elementary differenctial equations / 
William E. Boyce and Richard C. DiPrima. 
 - 7th ed. 
 - New York :  John Wiley & Sons,   c2001. 
 - xvi, 592 p. :  ill. ;  28 cm. 
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<br/><br/><label>ISBN: </label>0471319988 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.<br/>Mathematical analysis.<br/>Differencial equation.
<br/><br/><label>Dewey Class. No.: </label>515.35