Esser, Martinus. <br/><br/>
Differential equations / 
Martinus Esser. 
 - Philadelphia :  W.B. Saunders,  c1968. 
 - ix, 249 p. :  illus. ;  24 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.
<br/><br/><label>Dewey Class. No.: </label>517.38  / ESD 1968