Matching Items (3)
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- All Subjects: Hayden, Carl Trumbull, 1877-1972
- All Subjects: Desert conservation
- Creators: Akers, Charles H.
- Creators: Mitchell, Walter
- Creators: Proudfoot, Glenn A.
- Status: Published
ContributorsMitchell, Walter (Author)
Created1936-02-04
Description
Letter from Walter Mitchell to Carl Hayden on building a Union Chapel in the Grand Canyon.
ContributorsAkers, Charles H. (Author)
Created1918-05-21
Description
Letter from Charles H. Akers to Carl Hayden expressing his support for the National Park bill.
ContributorsProudfoot, Glenn A. (Author) / Douglas, R. Douglas (Author) / Pima County (Ariz.). County Administrator's Office (Publisher)
Created2001-01
Description
Mr. Proudfoot, the leading pygmy-owl biologist in the United States, has worked for the last two years to gather and analyze the data that allows us to address issues regarding the genetic viability of ferruginous pygmy-owls in Arizona and to establish a framework for future management efforts. The two major questions addressed are (1) do populations of concern lack genetic variation relative to putative healthy populations, and (2) how unique are geographically distinct populations within a species of special concern?