Moore, Douglas H.  <br/><br/>
Heaviside operational calculus :  an elementary foundation / 
Douglas H. Moore. 
 - New York :  American Elsevier Publishing,  c1971. 
 - 152 p.:  ill. 
<br/><br/><label>ISBN: </label>0444000909 
<br/><br/><label>Dewey Class. No.: </label>515