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This paper is based on an address delivered to The Bibliographical Society, London, on 15 February 1983, and subsequently published in The Library, Sixth Series, VI (December 1984), 333-65.
This paper is based on an address delivered to The Bibliographical Society, London, on 15 February 1983, and subsequently published in The Library, Sixth Series, VI (December 1984), 333-65.