Rotman, Joseph J. <br/><br/>
The theory of groups  :   an introduction /  
Joseph J. Rotman. 
 - 2 ed. 
 - boston :  Allyn and Bacon  1976. 
 - 324 p.   23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TEORIA DE GRUPO