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Filtering by: Creator Jackman, E. R. Decade 1920-1929

Seed potato certification for 1923

Seed potato certification for 1924

Certification of small grains [1924]

The inheritance of head characters in a species of hybrid of wheat

The effect of potassium on the germination of corn

A study of some economic factors in the scarification of red clover and alfalfa seed

The milling qualities of wheat

A comparison of kale and corn silage in the dairy cow's ration

The effect of various heat treatments upon the vitality of seed potatoes and upon the ...

The relation of slash to insect infestation

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