TY  - RPRT
TI  - Helicopter electromagnetic and magnetic geophysical survey data, Swedeburg and Sprague study areas, eastern Nebraska, May 2009
AU  - B. D. Smith
AU  - J.D. Abraham
AU  - J. C. Cannia
AU  - B. J. Minsley
AU  - L.B. Ball
AU  - G. V. Steele
AU  - M. Deszcz-Pan
PY  - 2011
DO  - 10.3133/ofr20101288
UR  - https://pubs.usgs.gov/publication/ofr20101288
ID  - ofr20101288
ER  -