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Powdery Mildew of the Cherry, Podosphaera Oxycantha, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888
GLS18A25_223

Powdery Mildew of the Cherry, Podosphaera Oxycanth...

Downy Mildew and Rot of Potato, Phytophthora Infestans, Plate II, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888
GLS18A25_218

Downy Mildew and Rot of Potato, Phytophthora Infes...

Downy Mildew and Rot of Potato, Phytophthora Infestans, Plate I, Report of the Commissioner of Agriculture, US Dept of Agriculture, Illustration, 1888
GLS18A25_217

Downy Mildew and Rot of Potato, Phytophthora Infes...