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  1. Observations on the Coccidae of Egypt,
    By: Hall, Wilfrid John.
    Publication info: Cairo,Government Press,1922.
    Holding Institution: University of California Libraries (archive.org)
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  2. The outbreak of Pseudococcus sacchari, Ckll., on the sugar cane of Egypt.
    By: Hall, Wilfrid John.
    Publication info: Cairo,Government Press1922.
    Holding Institution: University of California Libraries (archive.org)
    View Book