selected publications
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article
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Human geography and physical features of Illinois as revealed on the Bier/ISGS physiographic map; focus on central Illinois..
Bulletin of the Illinois Geographical Society.
36:16-38.
1994
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Interpreting the physical geography of Illinois as shown on the BIER/ISGS physiographic map; northern and southern examples..
Bulletin of the Illinois Geographical Society.
35:24-34.
1993
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Human geography and physical features of Illinois as revealed on the Bier/ISGS physiographic map; focus on central Illinois..
Bulletin of the Illinois Geographical Society.
36:16-38.
1994