00676cam a22002171 4500 agr47000040 DLC 20260227111005.0 750513s1947 xx 000 0 eng agr47000040 (OCoLC)1330749 DLC FM OCoLC DLC SB139 .M48 581.194 Mitchell, John W. (John William), 1905- Growth regulators for garden, field and orchard, by John W. Mitchell & Paul C. Marth. Chicago, Univ. of Chicago Press [c1947] vii, 129 p. illus. 22 cm. Plant hormones. Marth, Paul C. (Paul Charles), 1909- 10572 10572