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  1. Sulfur-house operation /
    By: Phaff, Herman. - Mrak, E. M. (Emil Marcel),
    Publication info: Berkeley, Calif. :University of California, College of Agriculture, Agricultural Experiment Station,1948.
    Holding Institution: University of California, Davis Libraries (archive.org)
    View Book
  2. Sun-drying fruits /
    By: Mrak, E. M. (Emil Marcel), - Phaff, Herman.
    Publication info: Berkeley, Calif. :University of California, College of Agriculture, Agricultural Experiment Station,1949.
    Holding Institution: University of California, Davis Libraries (archive.org)
    View Book