| http://www.w3.org/ns/prov#value | - A tree-cutting device comprising a mounting structure, and a triangularly shaped blade having a base and two sides edges, said mounting structure including means for securing the same to the trunnions of a tractor, longitudinally spaced saw teeth formed on said side edges, said saw teeth being provided with negative clearance langles to cause the tractor and device to ride out, the negative cleara
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