Alchourron, Carlos E. <br/><br/>
Normative systems / 
Carlos E. Alchourron and Eugenio Bulygin 
 - New York :  Springer-Verlag,  c1971 
 - xviii, 208 p. ;  24 cm. 
 - Library of exact philosophy ;  5 .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0387810196 :  Rs. 69.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Law--Methodology<br/>Logic, Symbolic and mathematical
<br/><br/><label>Dewey Class. No.: </label>340.018