Petrich, Mario <br/><br/>
Categories of algebraic systems  vector and projective spaces, semigroups, rings, and lattices 
Mario Petrich 
 - Berlin ; New York  Springer-Verlag  c1976 
 - viii, 217 p  ill  25 cm 
 - Lecture notes in mathematics  553  ISSN 0075-8434 .
 - Lecture notes in mathematics (Springer-Verlag) .
<br/><br/> Cuprinde bibliografie si index 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>354007998x  038707998x  
<br/><br/><label>LCCN: </label>76053511 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra, Abstract<br/>Categories (Mathematics)
<br/><br/><label>Dewey Class. No.: </label>510.8  512