Category:Annual report of the Entomologist of the State Experiment Station of the University of Minnesota
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Media in category "Annual report of the Entomologist of the State Experiment Station of the University of Minnesota"
The following 21 files are in this category, out of 21 total.
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Model of a machine for killing grasshoppers (1902) (19177829139).jpg 3,344 × 2,110; 533 KB