Churchill, Ruel V  <br/><br/>
Operational mathematics  

 - 3rd ed. 
 - New York   McGraw-Hill   1958 
 - xii,481 p.  ill 
<br/><br/><label>ISBN: </label>070108706 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operational Mathematics
<br/><br/><label>Dewey Class. No.: </label>511.33  / C38