Sources of international uniform law 
edited by Konrad Zweigert and Jan Kropholler 
 - Leiden:  A.W.Sijthoff,  1971 
 - 3v. ;   26 cm. 
<br/><br/> At head of title : Max-Planck-Institut fur Auslandisches und Internationales Privatrecht. 
<br/><br/><label>ISBN: </label>902189131X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Law--International unification--Sources..