Roark, Raymond J.  <br/><br/>
Fórmulas for stress and strain /   
Raymond J. Roark, . 
 - 2a ed, 2a impr. 
 - New York :   McGraw-Hill,   1943. 
 - p. 366 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TENSIONES<br/>RESISTENCIA DE MATERIALES
<br/><br/><label>Universal Decimal Class. No.: </label>539.4