| http://www.w3.org/ns/prov#value | - ent, for example trepanned resins such as polymers of alpha-pinene or beta-pinene, methyl, glycerol or pentaerythritol esters of rosins or modified rosins and gums, such as hydrogenated, dimerized or polymerized rosins, or combinations comprising at least one of the foregoing resins, the pentaerythritol ester of partially hydrogenated wood or gum rosin, the pentaerythritol ester of wood or gum ros
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