George F. Simmons <br/><br/>
Differential Equations 
George F. Simmons 
 - 1 
 - New York  Mc Graw Hill  2007 
 - 135  28 
<br/><br/><label>ISBN: </label>9780072863161 
<br/><br/><label>Dewey Class. No.: </label>515  / si 472