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External URL
http://janus.lib.cam.ac.uk/db/node.xsp?id=EAD%2FGBR%2F0014%2FAVHL%20I%203%2F39
Description

On light effects when crossing the English Channel (esp. Gris Nez light).

Photocopy of original letter, reproduced with permission of the Churchill Archives Centre, The Papers of Professor A. V. Hill, AVHL I 3/90

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