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  1. Compilation of notes on the most important timber tree species of the Philippine Islands.
    By: Ahern, George Patrick,
    Publication info: Manila,1901
    Contributed by: University of Michigan (archive.org)
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  2. Hearings before Committee on insular affairs, House of representatives. Forestry matters in the Philippines
    By: United States. - Ahern, George Patrick,
    Publication info: Washington,Govt. print. off.,1908.
    Contributed by: Library of Congress
    BHL Collections: Library of Congress
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  3. Special report of Captain George P. Ahern ... in charge of Forestry Bureau, Philippine Islands, covering the period from April, 1900, to July 30, 1901. Division of Insular Affairs, War Department.
    By: Philippines. - Ahern, George Patrick, - United States.
    Publication info: Washington,Govt. Print. Off.,1901.
    Contributed by: Library of Congress
    BHL Collections: Library of Congress
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  4. Special report of Captain George P. Ahern ... in charge of Forestry Bureau, Philippine Islands, covering the period from April, 1900, to July 30, 1901. Division of Insular Affairs, War Department.
    By: Philippines. - Ahern, George Patrick, - United States.
    Publication info: Washington :Govt. Print. Off.,1901.
    Contributed by: University of California Libraries (archive.org)
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  5. Special report of Captain George P. Ahern in charge of Forestry bureau, Philippine Islands, covering the period from April, 1900, to July 30, 1901. Division of insular affairs, War department.
    By: Philippines. - Ahern, George Patrick, - United States
    Publication info: Washington,Govt. print. off.,1901.
    Contributed by: University of Michigan (archive.org)
    View Book