Bui 24, Div Veg. Phys. & Path , U. S. Dept. of Agriculture. 



Plate V, 



Fig- 1.— Harvesting with the Combined Harvester-thresher near Walla Walla, 

 Wash, i Photographed by A. B. Leckenby. > 



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Fig. 



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-Wheat Fields before and after harvesting, near Walla Walla, Wash 

 (Photographed by A. B. Leckenby. ' 



