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  1. Tull, L.; Vélez-Vendrell, N.; Halverson, J.: Establishing geographic names (1990) 10.31 
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  2. Vendrell, N.V.; Halverson, J.; Salas-Tull, L.: Evaluation of a program for assigning subject headings to local thesis and dissertations (1988) 10.31 
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  3. Salas-Tull, L.; Halverson, J.: Subject heading revision : a comparative study (1987) 10.31 
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