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Books from the extended shelves:
Cannon, William Austin, 1870-: General and physiological features of the vegetation of the more arid portions of southern Africa, with notes on the climatic environment, by William Austin Cannon. (Washington, Carnegie institution of Washington, 1924) (page images at HathiTrust)
Cannon, William Austin, 1870-: Physiological features of roots, with especial reference to the relation of roots to aeration of the soil, / by William Austin Cannon, with a chapter on differences between nitrogen and helium as inert gases in anaerobic experiments on plants, by Edward Elway Free. (Washington, : The Carnegie Institution of Washington, 1925) (page images at HathiTrust)
Cannon, William Austin, 1870-: Plant habits and habitats in the arid portions of South Australia, by William Austin Cannon. (Washington, Carnegie Institution of Washington, 1921) (page images at HathiTrust)
Cannon, William Austin, 1870-: The root habits of desert plants, (Washington, D.C., Carnegie institution of Washington, 1911) (page images at HathiTrust)
Cannon, William Austin, 1870-: Studies in heredity as illustrated by the trichomes of species and hybrids of Juglans, Oenothera, Papaver, and Solanum / by William Austin Cannon. (Washington, D. C. : Carnegie Institution of Washington, 1909) (page images at HathiTrust)
Cannon, William Austin, 1870-: Studies in heredity as illustrated by the trichomes of species and hybrids of Juglans, Oenothera, Papaver, and Solanum, by William Austin Cannon. (Washington, D.C., Carnegie Institution of Washington, 1909) (page images at HathiTrust)
Cannon, William Austin, 1870-: The topography of the chlorophyll apparatus in desert plants. By William Austin Cannon. (page images at HathiTrust; US access only)See also what's at your library, or elsewhere.
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