Churchill, Ruel V.. <br/><br/>
Operational Mathematics /  Textual Documents 
Ruel V.Churchill. 
 - 1st ed. / 
 - New York :  McGraw - Hill book company ,  c1958. 
 - 337p. :  ill ;  22cm . 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics Operational Mathematics G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>511  / C 474 Op