Berg, Paul W. McGregor, James L. <br/><br/>
Elementary partial differential equations 
[by] Paul W. Berg [and] James L. McGregor. 
 -  Holden-Day San Francisco  1966  1966 
 - xv, 421 p.illus.24 cm. 
 - Holden-Day series in mathematics .
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Partial.--QA
<br/><br/><label>LC Class. No.: </label>QA374.B35