Harris, J. W. <br/><br/>
Law and legal science :  an inquiry into the concepts legal rule and legal system 

 - Oxford :  Clarendon press,  1979 
 - 174 p. 
<br/><br/><label>ISBN: </label>0198253532 
<br/><br/><label>Subjects--Topical Terms: </label><br/>JURISPRUDENCIA<br/>RACIONALISMO<br/>COMMON LAW<br/>KELSEN, HANS