Esser, Martinus <br/><br/>
Differential equations 

 - Philadelphia  W.B.Saunders Co.  1968 
 - vii, 249 p. 
<br/><br/><label>ISBN: </label>28960 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations
<br/><br/><label>Dewey Class. No.: </label>515.35  / ESS