Etgen, Garret J. <br/><br/>
An introduction to ordinary differential equations  : with difference equations, numerical methods, and applications 
Garret J. Etgen, William L.Morris 
 - New York:  Harper and Row,  1977. 
 -  vii, 517p. 
<br/><br/> HB 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>006041913X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations
<br/><br/><label>Dewey Class. No.: </label>515.352  / ETI