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P. W. Zimmerman, A. E. Hitchcock, Henry Kirkpatrick, Jr., Methods for Determining Relative Volatility of Esters of 2,4-D and Other Growth Regulants Based on Response of Tomato Plants, Weeds, Vol. 2, No. 4 (Oct., 1953), pp. 254-261
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Zimmerman et al. (1953) studied this question.
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