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  1. 1
    Published 1903
    Harrisburg, Pa. : Issued quarterly from the Office of the Economic Zoologist, 1903.
    1 v. : ill. ; 23 cm.
  2. 2
    Published 1836
    Harrisburg : Published by the Board of Commissioners for the Geological Survey, 1836-1887.
    1 online resource (6 volumes) : illustrations.
    LLMC Digital
    Online Resource

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