Soils Survey Manual
http://soils.usda.gov/technical/manual/
Soil Series Descriptions
http://soils.usda.gov/technical/classification/osd/index.html
Ecological Site Descriptions
http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/technical/ecoscience/desc/
North Dakota BLM
http://www.blm.gov/mt/st/en/fo/north_dakota_field.html
North Dakota US Forest Service
http://www.ndsu.edu/ndfs/
Successful Reclamation of Lands Disturbed by Oil and Gas Development and Infrastructure Construction
http://www.ag.ndsu.edu/publications/landing-pages/livestock/successful-reclamation-of-lands-r-1728
Reclamation of Oil and Gas Industry-impacted Land: A Guide and Checklist – NDSU
https://www.ag.ndsu.edu/publications/landing-pages/livestock/Reclam-ol-gas-land-r-1766