http://tags.library.upenn.edu/tag/commodity_chain PennTags Feed for /tag/commodity_chain PennTags Feed http://tags.library.upenn.edu/makerecord/url/8230 http://tags.library.upenn.edu/makerecord/url/8230 Of saviours and punks: The political economy of the Nile perch marketing chain in Tanzania. http://tags.library.upenn.edu/makerecord/url/8231 http://tags.library.upenn.edu/makerecord/url/8231 The poor relation. A political economy of the marketing chain for dagaain Tanzania.