
Roots of the alfalfa plant
Diagram shows root depth of the alfalfa plant in order to compare the depths that can be reached by natural "diggers" and human ones.
1934-10-14
27 x 2.8 cm
Tribune Company
grayscale
- English
- still image
- text
- These materials are either in the public domain, according to U.S. copyright law, or permission has been obtained from rights owners. The digital version and supplementary materials are available for all educational uses worldwide.
- The Janet A. Ginsburg Chicago Tribune Image Collection
- Chicago Sunday Tribune (October 14, 1934), n.p.
- application/pdf
- image/jpeg

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