Churchill, Ruel Vance,  1899- <br/><br/>
Operational mathematics/ 
Ruel Vance Churchill. 
 - 2d ed. 
 - New York:  McGraw-Hill,  1958. 
 - 337 p.:  illus.,  24 cm. 
<br/><br/> First ed. published in 1944 under title: Modern operational mathematics in engineering. 
<br/><br/><label>LCCN: </label>58006678 /L/r83 
<br/><br/><label>Nat. Bib. No.: </label>GB59-1895 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Integral transforms.<br/>Differential equations.<br/>Calculus, Operational.<br/>Cálculo Operacional.
<br/><br/><label>Dewey Class. No.: </label>515.723  / C563o