Churchill, Ruel V. <br/><br/>
Modern operational mathematics in engineering /  
Ruel V. Churchill 
 - New York, NY :  McGraw-Hill,  1944 
 - 306 p. 
<br/><br/><label>Subjects--Topical Terms: </label>--MATEMATICAS 
<br/><br/><label>Universal Decimal Class. No.: </label>51:62