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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. 

Duffin, Paul H, ed. KNOWLEDGE-BASED SYSTEMS: Applications in Administrative Government. NY: Wiley, 1988. ~ 176 pages. Hardcover (ISBN 0-470-21260-8). Fine. No dust jacket.
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