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Epidemiological studies of the dispersal of and infection by Guignardia bidwellii (Ellis) Viala and Ravaz, the causal agent of black rot disease of'Concord' and 'Niagara' grapes, Vitis labrusca L

Epidemiological studies of the dispersal of and infection by Guignardia bidwellii (Ellis) Viala and Ravaz, the causal agent of black rot disease of'Concord' and 'Niagara' grapes, Vitis labrusca L

Ferrin, Donald Michael

Text (1976)

Part of Electronic Theses & Dissertations