Presence and distribution of nitrate and selected pesticides in surficial-sand aquifers and selected lakes, 1983-94, East Otter Tail County, Minnesota [unknown]

Shannon E. Smith, James E. Ruhl
1995 Antarctica A Keystone in a Changing World   unpublished
doi:10.3133/ofr95116 fatcat:pkvx3he3xrgyzhhm4sblqqsa7i