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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 Headings period subdivisions for Latin America : some proposed additions (1984)
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Hamilton, G.: British Library BNB on CD-ROM v.3.0 : a review (1992)
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