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Letter: For the record

Published 26 July 2017

• The final illustration of our report of investigations of flow was in fact of copper rods (1 July, p 32).

• The musician and author we quoted on birds with swing is (15 July, p 11).

Issue no. 3136 published 29 July 2017

Â鶹´«Ã½ issue 3136 cover

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