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A Practical Treatise on Caoutchouc and Gutta Percha
Bok av Raimund Hoffer
Comprising The Properties Of The Raw Materials And The Manner Of Mixing And Working Them; With The Fabrication Of Vulcanized And Hard Rubbers, Caoutchouc And Gutta Percha Compositions, Waterproof Substances, Elastic Tissues, The Utilization Of Waste, Etc.