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G. R. Hallberg

12

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176

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Pesticides in Ambient Air and Precipitation in Rural, Urban, and Isolated Areas of Eastern Iowa

2000
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Pesticides in Iowa precipitation

1992 Journal of Environmental Quality
- B. K. Nations
- G. R. Hallberg
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VEGETATIONAL CHANGES IN WESTERN ILLINOIS DURING THE ONSET OF LATE WISCONSINAN

1989
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An Exposure of the Sangamon Soil in Southeastern Minnesota

1987
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Evaluation of ERTS-1 imagery for mapping Quaternary deposits and landforms in the Great Plains and Midwest. [Illinois, Nebraska, Iowa, Missouri, and Kansas]

1973
- R.B. Morrison
- G. R. Hallberg
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Evaluation of ERTS-1 imagery for mapping Quaternary deposits and landforms in the Great Plains and Midwest

1973
- R.B. Morrison
- G. R. Hallberg
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A study of quaternary landforms and materials in the midwest and Great Plains

1972
- R.B. Morrison
- G. R. Hallberg
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