Shervatov, V. G. <br/><br/>
Hyperbolic functions / 
V.G. Shervatov; translated and adapted fro m the 2d Russian d. (1958) by A. Gordon Foster and Coley Mills, Jr. 
 - Boston :  Health,  1963. 
 - 55 p. :  ill. ;  21 cm. 
 - Topics in mathematics. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functions, Exponetial.
<br/><br/><label>Dewey Class. No.: </label>P 517.36 S44