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  1. Commercial turpentines: their quality and methods for their examination. By F.P. Veitch ... and M.G. Donk.
    By: Veitch, F. P. - Donk, M. G.
    Publication info: Washington,Govt. Print. Off,1911.
    Contributed by: University of California Libraries (
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  2. The distillation of stumpwood and logging waste of western yellow pine /
    By: Donk, M. G. - Marshall, W. D., - Shattuck, Charles Houston,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1921.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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