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By "Klaas, Helen, (Born - 1911)"
A study of soybean varieties with reference to their use as food / by Sybil Woodruff and Helen Klaas.
By: Woodruff, Sybil, - Klaas, Helen,
Publication info: Urbana, Ill. :University of Illinois Agricultural Experiment Station,1938.
Contributed by: University of Illinois Urbana Champaign