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Studwell, W.E.: Subject suggestions 1 : some concerns relating to geographic areas (1988)
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Studwell, W.E.: Subject suggestions 4 : some concerns relating to literature and language (1989)
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Studwell, W.E.: Library of Congress Subject Heading period subdivisions for the history of the individual states of the United States : some proposed additions (1987)
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Studwell, W.E.; Hamilton, D.A.: Library of Congress Subject Heading period subdivisions for Eastern Europe excluding the Soviet Union : some proposed additions (1985)
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Studwell, W.E.; Hamilton, D.A.: Library of Congress Subject Heading period subdivisions for the Soviet Union : some proposed additions (1986)
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