Books by Robert W Duemling:
Books in the extended shelves:
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Duemling, Robert W: San Diego and Tijuana : conflict and cooperation between two border communities : a case study (U.S. Dept. of State, Foreign Service Institute, 1981), also by Foreign Service Institute (U.S.) and Executive Seminar in National and International Affairs (23rd : 1980-81) (page images at HathiTrust)
Find more by Robert W Duemling at your library, or elsewhere.