Niklas Luhmann  <br/><br/>
Social systems/ 
by Niklas Luhmann 
 - California:  Stanford University Press,  1995. 
 - 627p. 
<br/><br/><label>ISBN: </label>9780804726252 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Systems<br/>Social aspects<br/>Social sciences
<br/><br/><label>Dewey Class. No.: </label>303.483 3  / NIK/S