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close this section of the libraryMitchell, John W. (John William), 1905- 4n(1)
View the documentMitchell, John W. (John William), 1905- 4n; Methods of studying plant hormones and growth-regulating substances / by John W. Mitchell and George A. Livingston. Washington, D.C. : Agricultural Research Service, U.S. Dept. of Agriculture, 1968.