Zweigert, Konrad,  1911- <br/><br/>
An introduction to comparative law / 
by Konrad Zweigert and Hein Kötz. 
 - 2nd rev. ed /  translated from the German by Tony Weir. 
 - Oxford :  Oxford University Press,  1992 
<br/><br/> This ed. first published 1987 in 2 v.  Previous ed. in English: North-Holland, 1977  First published 1969-71 as Einführung in die Rechtsvergleichung auf dem Gebiete des Privatrechts