Green, S.L. <br/><br/>
An Introduction to differential equations 
/ S.L.Green 
 - London:  University tutorial Press,  1969. 
 - 137 pages. 
<br/><br/><label>ISBN: </label>723104964 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations
<br/><br/><label>Dewey Class. No.: </label>515.35  / GRE