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Test Methods With Plant Regulating Chemicals
1 . http://purl.fdlp.gov/GPO/gpo23466
"Mitchell, John W. (John William), 1905- Test methods with plant-regulating chemicals." » Methods of studying plant hormones and growth-regulating substances [electronic resource] / by John
Mitchell, John W. (John William), 1905-
[Washington, D.C.] : Agricultural Research Service, U.S. Department of Agriculture, [1968]
Internet File
2 . http://naldc.nal.usda.gov/download/CAT87208930/PDF
Mitchell, John W. (John William), 1905-
Washington, D.C. : U.S. Department of Agriculture, 1958.
Internet File
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