Zill, Dennis G. <br/><br/>
A first course in differential equations with modeling applications / 
Dennis G. Zill 
 - 9th ed. 
 - Belmont, CA :  Brooks/Cole, Cengage Learning,  c2009 
 - xiii, 362, 23, 16, 7 p. :  col. ill. ;  29 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780495108245 0495108243 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations--Textbooks