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Reprint with a new introduction.
Originally published: [Oxford?] : Oxford University Press for the International African Institute, 1963.
Two folded pages of structures and political alignments and one folded map.
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The trading states of the oil rivers : a study of political development in Eastern Nigeria by G. I. Jones. ISBN 0852559186. Published by Lit/J. Currey with the IAI in 2001. Publication and catalogue information, links to buy online and reader comments.