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Articles

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Ecosystem Studies at Cedar Creek Natural History Area, II
D. B. Lawrence, J. D. Ovington, and J. R. Bray

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The Uptake of C14O2 By Soybean Roots
Theodore W. Sudia and Richard D. Durbin

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Physiologic Circadian Systems
Franz Halberg, Ruth Loewenson, Ralph Winter, Jacob Bearman, and Galen H. Adkins