Nastasescu C <br/><br/>
Graded ring theory. 
Nastasescu C; Oystaeyen F Van 
 -  1982 
<br/><br/><label>Standard No.: </label>6832 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B262, M2