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Dr. Philip Callahan, Ph.D.

Guest Website

Show Appearances

  • March 15, 1992

    Topic: Nature's Silent Music: A Rucksack Naturalist's Ireland, Acres USA, 1991

  • June 25, 1989

    Topic: Ancient Mysteries, Modern Visions: The Magnetic Life of Agriculture, Acres, USA, 1984

Books

  • Nature’s Silent Music: A Rucksack Naturalist’s Ireland

    Nature’s Silent Music: A Rucksack Naturalist’s Ireland

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