• 4 Steenbock Library
• 1 Science Libraries Shelving Facility

• 6 Agriculture
• 3 University of Wisconsin--Madison. College of Agricultural and Life Sciences
• 2 Evaluation
• 2 Field experiments
• 2 Hybrid corn
• 2 Life sciences
• 2 Study and teaching
• 2 University of Wisconsin. College of Agriculture
• 2 Yields
• 1 Economic aspects
• 1 Farm tractors
• 1 Internal combustion engines
• 1 Research

• 2 University of Wisconsin--Extension
• 2 University of Wisconsin--Madison. Archives
• 2 University of Wisconsin. College of Agriculture
• 2 Wisconsin Crop Improvement Association
• 1 University of Wisconsin--Extension. Cooperative Extension Service
• 1 University of Wisconsin--Madison. Department of Agricultural Economics

• 8 English

• 5 Wisconsin

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