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By "Guba, Emil Frederick, (Born - 1897)"
Phyllosticta leaf spot, fruit blotch, and canker of the apple : its etiology and control / by Emil Frederick Guba.
By: Guba, Emil Frederick,
Publication info: Urbana, Ill. :University of Illinois Agricultural Experiment Station,1925.
Contributed by: University of Illinois Urbana Champaign