Waltman, Paul E. <br/><br/>
A second course in elementary differential equations / 
Paul Waltman. 
 - Orlando:  Academic press;  1986. 
 - xi, 259 p. :  ill. ; 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.
<br/><br/><label>Universal Decimal Class. No.: </label>517.9  / WAL