George Harlan Dungan

1887

• Illinois corn performance tests
• Developments in hybrid corn production
• Growing field crops
• Illinois corn performance tests
• Illinois corn performance tests
• Illinois corn performance tests, 1937
• Illinois corn performance tests, 1938
• Illinois hybrid corn test 1944
• Illinois hybrid corn tests 1943
• Illinois hybrid corn tests 1945
• Illinois hybrid corn tests, 1946
• Productiveness of certain varieties of corn in Illinois