00524cam a22001694a 4500 41022 41022 041021s2005 pau b 001 0 eng 1592133673 9781592133680 Gibbon, Peter. Trading down : Africa, value chains, and the global economy / Peter Gibbon and Stefano Ponte. Philadelphia : Temple University Press, 2005. xviii, 251 p. ; Globalization. 848 Ponte, Stefano. BK HC800 .G53 2005