George R. Hallberg

Site evaluation, design, operation, and installation of home sewage systems in Iowa

Gerald A. Miller, Thomas E. Fenton, Thomas J. Bicki, 1981 .

From hoes to herbicides agriculture and groundwater quality

George R. Hallberg, G. Hallberg, 1986 .

Pesticides pollution of groundwater in the humid United States

George R. Hallberg, G. Hallberg, 1989 .

Agricultural chemicals in ground water: Extent and implications

George R. Hallberg, G. Hallberg, 1987 .

Challenges and Opportunities in the Hydrologic Sciences

George M. Hornberger, Dara Entekhabi, Otto C. Doering, 2012 .

The Scientific Basis for Estimating Emissions from Animal Feeding Operations

Christopher B. Field, Calvin B. Parnell, William A. Wulf, 2002 .

Nitrate in ground water in the United States.

George R. Hallberg, G. Hallberg, 1989 .