| http://www.w3.org/ns/prov#value | - Machine-tools for working any material by removal of material, by laser or other light or photon beam, ultrasonic, electro-discharge, electro - chemical, electron beam, ionic- beam or plasma arc processes plasma Machine-tools for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass Machine-tools (including machines for nailing, stapling, glueing or
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