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Title: Tools for deep-hole boring: gisholt cutter; spade bit; three [Go to resource]
Description: Tools for deep-hole boring: gisholt cutter; spade bit; three-quarter solid boring tool; solid boring tool (1963)); trepanning tool (1963) License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1964-206 Go to resource More Like this...
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