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	1.	Image from Amazon.com	Pre-Colonial African Trade: essays on trade in Central and Eastern Africa before 1900; edited by Richard Gray and David Birmingham. by Gray, Richard, 1929- Birmingham, David [joint author.] Material type: Text; Format: print ; Literary form: Not fiction Publication details: London, New York, Oxford U.P., 1970 Availability: No items available. Save to lists Add to cart (remove)
	2.	Image from Amazon.com	Science and engineering literature : a guide to reference sources / H. Robert Malinowsky, Richard A. Gray, and Dorothy A. Gray. by Malinowsky, H. Robert Gray, Richard A Gray, Dorothy A Series: Library science text series Edition: 2nd edition Material type: Text; Format: print ; Literary form: Not fiction Publication details: Littleton, Colo. : Libraries Unlimited, 1976 Availability: Items available for loan: Margaret Thatcher Library (1)Call number: Z 7401 .M28 1976. Place hold Save to lists Add to cart (remove)