Table of circular and hyperbolic tangents and cotangents for radian arguments. /  

 - [2d ed.] 
 - New York :   Columbia University Press,   [1947] 
 - xxxviii, 410 p.  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TRIGONOMETRIA--TABLAS
<br/><br/><label>Universal Decimal Class. No.: </label>51-33