Kells, Lyman M. (Lyman Morse), 1888- <br/><br/>
Differential equations  a brief course with applications 
Lyman M. Kells 
 - New York  McGraw-Hill  1968 
 - x, 252 p. : ill. ; 23 cm. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations