TY  - RPRT
TI  - Availability of elements in soil to native plants, Northern Great Plains
AU  - R. C. Severson
AU  - L. P. Gough
AU  - J.M. McNeal
PY  - 1977
DO  - 10.3133/ofr77847
UR  - https://pubs.usgs.gov/publication/ofr77847
ID  - ofr77847
ER  -