Campbell, Stephen L. <br/><br/>
An introduction to differential equations and their applications / 
Stephen L. Campbell. 
 - 2nd ed. 
 - Belmont, Ca. :  Wadsworth Publishing Co.,  1990. 
 - 596 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0534094686 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.