@Book{Memo51852, author = {von Ramona Teuber}, title = { Geographical indications of origin as a tool of product differentiation, The case of coffee }, year = { 2008 }, number = {}, url = {/brokenurl# http://geb.uni-giessen.de/geb/volltexte/2008/5389/index.html }, const = {\ text} }