19 November 1977 - 22 November 1977

Taxonomic workshop 1977: Oxford

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20 November 1976 - 21 November 1976

Autumn workshop 1976: Thames Polytechnic, Woolwich

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15 November 1975 - 16 November 1975

Taxonomic workshop 1975: Cardiff

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16 November 1974 - 17 November 1974

Taxonomic workshop 1974: Woolwich, London

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