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Title: Pencil sketch by A. Naysmyth in 1819 of screw propeller [Go to resource]
Description: Pencil sketch by A. Naysmyth in 1819 of screw propeller License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1857-74 Go to resource More Like this...
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