Abu-Lughod, Janet L. Before European hegemony : the world system A. D. 1250-1350 / Janet L. Abu-Lughod - New York : Oxford University Press, 1989 - 443 p. ; 23 cm. Bibliography : p. 374 - 427 ISBN: 0195058860 Subjects--Topical Terms: Economic history--Medieval, 500-1500