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Title: Photo lens, Ross patent Airo f5 [Go to resource]
Description: Photo lens, Ross patent Airo f5.6, 20" focal length; No. 82814 with filter No. 56. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1927-260 Go to resource More Like this...
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