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MARTIN LANGER, 2919-E N. Military Trail, West Palm Beach, FL 33409. Scholarly books - first editions - gay and lesbian literature. Write: martin at InvisibleCities dot com, or call him at: (561) 346-2002. 

Wilson, Robin. FOUR COLORS SUFFICE: How the Map Problem Was Solved. Princeton, NJ: Princeton, 2002. ~ 262 pp. Hardcover (ISBN 0-691-11533-8). Very good; in very good dust jacket.
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