P. M Cohn <br/><br/>
Free rings and their relations 

 - New York  Academic Press  1971 
 - 346p 
<br/><br/>P. M Cohn: Free rings and their relations.  New York.  Academic Press, 1971.--(512.4COH)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>512.4  / COH