The Friction of Recording Pens on Paper

W. E. Knowles Middleton M.Sc., F.R.S.C. 1
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  • 1 National Research Council of Canada, Ottawa, Canada
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* Published by permission of the Controller of the Canadian Meteorological Service. This paper was prepared while the author was a member of that organization.

* Published by permission of the Controller of the Canadian Meteorological Service. This paper was prepared while the author was a member of that organization.

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