Per Axel Rydberg

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Books

Feeding Steers on Sugar Beet Pulp, Alfalfa Hay and Farm Grains

Feeding Steers on Sugar Beet Pulp, Alfalfa Hay and Farm Grains

Colorado Agricultural Experiment Station, Per Axel Rydberg, William Parker Headden, William Levi Carlyle, Philo Kneeland Blinn, Burton Orange Longyear, Wendell Paddock, Walter Herbert Olin, Christopher James Griffith, A. J. Meyer

Catalogue of the Flora of Montana and the Yellowstone National Park

Catalogue of the Flora of Montana and the Yellowstone National Park

Per Axel Rydberg

Flora of the Prairies and Plains of Central North America

Flora of the Prairies and Plains of Central North America

Per Axel Rydberg

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