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

 - 3 
 -  1981 
 - 481p  cm. 
<br/><br/><label>Standard No.: </label>80531 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B2893, M1