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First published 1925 by Johnson & Phillips Ltd Ninth edition 1961 Reprinted by Illiffe Books Ltd 1965 Tenth edition 1973 Reprinted 1967 (twice), 1981 Eleventh edition 1983 Reprinted 1985, 1988, 1990, 1993, 1995 Twelfth edition 1998 Reprinted 2003, 2005

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