Ronald Helgerson

Identifiers

Open LibraryOL12006533A

Top Subjects

South Dakota (2)
Groundwater (1)
Water quality (1)
Borings (1)
Harrold Region (1)
Water resources development (1)
Geology (1)

Books by Ronald Helgerson

Total count: 2

Ground-water investigation for the city of Harrold, South Dakota

Science Center, University of South Dakota1975-01-01
Geology and water resources of Hand and Hyde Counties, South Dakota

University of South Dakota, Science Center1985-01-01