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

 - 3rd 
 - Tokyo  McGraw-Hill  1972 
 -  481p. 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus
<br/><br/><label>Dewey Class. No.: </label>515.723  / CHO