Churchill, Ruel Vance,  1899- <br/><br/>
Operational mathematics 
Ruel V. Churchill 
 - 3d ed. 
 - New York  McGraw-Hill  [1971, c1972] 
 - xii, 481 p.  23 cm. 
<br/><br/> First ed. published in 1944 under title: Modern operational mathematics in engineering 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Integral transforms<br/>Differential equations<br/>Calculus, Operational
<br/><br/><label>Dewey Class. No.: </label>515  / .723