Books by Waldo S. Glock:
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Glock, Waldo S. (Waldo Sumner), 1897-1990: Principles and Methods of Tree-Ring Analysis (Carnegie Institution of Washington publication #486, 1937), contrib. by A. E. Douglass and G. A. Pearson (page images at HathiTrust)
Additional books by Waldo S. Glock in the extended shelves:
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Glock, Waldo S. (Waldo Sumner), 1897-1990: Soil-moisture fluctuations under two ponderosa pine stands in northern Arizona (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1964), also by Sharlene R. Agerter and Edward M. Gaines (page images at HathiTrust)- Glock, Waldo S. (Waldo Sumner), 1897-1990: Uniformity among growth layers in three ponderosa pine. (Smithsonian Institution, 1963) (page images at HathiTrust)
Find more by Waldo S. Glock at your library, or elsewhere.