Luhmann, Niklas <br/><br/>
Law as a social system 
Niklas Luhmann 
 - Oxford :  Oxford University press,  c 2004 
 - 491  p . :  23 cm. 
<br/><br/><label>ISBN: </label>9780199546121 
<br/><br/><label>Dewey Class. No.: </label>340.115  / LUH