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By "Ruth, W. A. (Warren Albert), 1884-"
A study of the framework of the apple tree and its relation to longevity / by W.A. Ruth and Victor W. Kelley.
By: Ruth, W. A. - Kelley, Victor W.
Publication info: [Urbana, Ill.] :University of Illinois Agricultural Experiment Station,.
Contributed by: University of Illinois Urbana Champaign