Raz, Joseph <br/><br/>
The concept of a legal system :  an introduction to the theory of legal system / 
Joseph Raz 
 - 2nd ed 
 - Oxford :  Clarendon Press,  1980 
 - (244)p.:  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Jurisprudence