[043-29]A Study of College Science Courses Designed for General Education
Bullington, Robert A. A Study of College Science Courses Designed for General Education 043-29-print
[064-69] The Stabilization of a Gully by Natural Forest Succession
Bullington, Robert A. The Stabilization of a Gully by Natural Forest Succession 064-69-print
[065-12] Invasion of Woody Plants in Abandoned Soil Bank Area of Pine Rock Preserve in Ogle County
Hooper, Jerry and Robert A. Bullington Invasion of Woody Plants in Abandoned Soil Bank Area of Pine Rock Preserve in Ogle County 065-12-print
[066-27] Forest Invasion on Abandoned Pasture Land at the Stronghold in Ogle County, Illinois
Bullington, Robert A. Forest Invasion on Abandoned Pasture Land at the Stronghold in Ogle County, Illinois 066-27-print
[066-02] The Vegetation of an Abandoned Road After a Half Century of Development
Bullington, Robert A. The Vegetation of an Abandoned Road After a Half Century of Development 066-02-print