01407cam a2200337 4500 agr68000115 DLC 20260227111029.0 690916s1968 dcua b 001 0 eng c agr68000115 U.S. Nat'l. Agr. Libr. DLC DLC SB128 .M55 1 Ag84Ah no. 336 581.1/92/7 Mitchell, John W. (John William), 1905- Methods of studying plant hormones and growth-regulating substances, by John W. Mitchell and George A. Livingston. [Washington] U.S. Agricultural Research Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off., [1968] iv, 140 p. illus. 26 cm. 0.55 United States. Dept. of Agriculture. Agriculture handbook ; no. 336 Supersedes his Test methods with plant-regulating chemicals, issued as Agriculture handbook no. 126. Includes bibliographies. Plant regulators. Plant hormones. Botany Technique. Growth substances for plants. Technique, Botanical. Livingston, George A., joint author. Mitchell, John W. (John William), 1905- Test methods with plant-regulating chemicals. Agriculture handbook (United States. Department of Agriculture) ; no. 336. 12422 12422