Tag Archives: Dobrovolny

[046-21]Prospecting for Commercial Sand and Gravel Using Electrical Earth Resistivity, Clinton County, Illinois

Dobrovolny, Jerry S. Prospecting for Commercial Sand and Gravel Using Electrical Earth Resistivity, Clinton County, Illinois 046-21-print  

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[047-27]A Cultural Engineering Course for Nonengineers

Dobrovolny, Jerry S. A Cultural Engineering Course for Nonengineers 047-27-print  

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