Text ( visual ) : unmediated The Sulu zone : the world capitalist economy and the historical imagination / James Francis Warren. -- Amsterdam : VU University Press , 1998. -- 71 p. : ill., map ; 24 cm. -- (Comparative Asian studies ; 20). -- Bibliography: p. 67-71. -- ISBN 9053835687 ; (BB00273729) ; https://ci.nii.ac.jp/ncid/BB00273729 Author Heading(s): Warren, James Francis. -- Classification(s): LCC : HC457.S85. -- Subject Heading(s): LCSH : Sulu (Philippines) -- Economic conditions ; LCSH : Sulu (Philippines) -- Foreign economic relations