Steen, Frederick H. <br/><br/>
Diffrencial Equations 

 - New York  Blaisdell Publishing Company  1955 
 - 267 
<br/><br/><label>Publisher. No.: </label> Select 
<br/><br/><label>Subjects--Personal Names: </label> Mathematics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics