Harray.D.A. <br/><br/>
Introductory Course In Differential Equations. 

 - 1st Ed. 
 -  LGC  1955 
 - 210p.  20 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>MATH
<br/><br/><label>Dewey Class. No.: </label> / HAR