4
by Ball, M
Published in BMJ (1977)
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5
by Ball, M. A.
Published in Notes and Queries (1857)
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6
by Ball, M. A.
Published in Notes and Queries (1857)
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7
by Ball, M. A.
Published in Notes and Queries (1857)
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8
by Ball, M. A.
Published in Notes and Queries (1857)
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9
by Ball, M. A.
Published in Notes and Queries (1857)
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10
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11
14
15
17
by Northmore-Ball, M D
Published in BMJ (1997)
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18
by Hay, A., Ball, M.
Published in BMJ (1995)
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