Frontiers of commodity chain research Commodity chains : genealogy and review Jennifer Bair Historicizing commodity chains : five hundred years of the global coffee commodity chain Steven Topik Trading up the commodity chain : the impact of extractive and labor intensive manufacturing trade on world system inequalities David Smith and Matthew Mahutga Protection networks and commodity chains in the capitalist world economy Immanuel Wallerstein The comparative advantages of tropical commodity chain analysis John Talbot From commodity chains to value chains : interdisciplinary theory building in an age of globalization Timothy J. Sturgeon Global commodity chains market makers and the rise of demand responsive economies Gary Gereffi and Gary Hamilton Mimicking lean in global value chains : its the workers who get leaned on Kate Raworth and Thalia Kidder Unveiling the unveiling : commodity chains commodity fetishism and the value of voluntary ethical food labels Julie Guthman Chain (re)actions : comparing activist mobilization against biotechnology in Britain and the U.S. William Munro and Rachel Schurman