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Hydrogen-ion concentration studies of Minnesota soils ...Fieger, E. A. January 1900 (has links)
Thesis (Ph. D.)--University of Minnesota, 1924. / Biographical sketch. Bibliography: l. 50-54.
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Hydrogen-ion concentration studies of Minnesota soils ...Fieger, E. A. January 1900 (has links)
Thesis (Ph. D.)--University of Minnesota, 1924. / Biographical sketch. Bibliography: l. 50-54.
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