Martin, William Ted, 1911- <br/><br/>
Elementary differential equations / 
Martin, William Ted, 1911- 
 - 2nd 
 - xiii, 331 p. : ill. 24 cm. 
 - Addison-Wesley series in mathematics .
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations<br/>Boundary value problems.
<br/><br/><label>Dewey Class. No.: </label>515.35