PETRICH, Mario <br/><br/>
Lecture notes in mathematics 
/[by] Mario Petrich 
 - Berlin  Spriger-Verlag  1974 
 - v, 182 p.- 
 - Lecture note in mathematics; 380 .
<br/><br/> Includes bibliography & index.<br/> 
<br/><br/><label>ISBN: </label>3540067302 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rings
<br/><br/><label>Dewey Class. No.: </label>512.4  / PET