Plant hormones
Subtitle: how they affect root formation
By: U.S. Department of Agriculture ; [developed by Diana Hereda Reinhard with the cooperation of Luis E. Gregory and Joseph F. Worley].
Contributors: Gregory, Luis E.; Worley, Joseph Francis.; United States. Agricultural Research Service. Information Division.
Series: Science study aid -- no. 9.
Publisher: Information Division, Agricultural Research Service, U.S. Dept. of Agriculture; For sale by the Supt. of Docs., U.S. G.P.O.
Published: 1974
Place of publication: Washington
Language: eng
Number of pages: 12
Subjects: Plant hormones; Roots (Botany) -- Formation; Roots (Botany) -- Anatomy
Notes: Caption title.

"August 1974"--P. [4] of cover.