. . . . . . . . . . . . . . . "Soil absorption of septic tank effluent: a field study of some major soils in Wisconsin"@en . . "Soil absorption of septic tank effluent : a field study of some major soils in Wisconsin"@en . "Soil absorption of septic tank effluent : a field study of some major soils in Wisconsin" . . . . . "Soil Absorption of Septic Tank Effluent - a Field Study of Some Major Soils in Wisconsin" . . . . . . . . . . . . . . . . . . . . "Soil absorption of septic tank effluent a field study of some major soils in Wisconsin"@en . . . . . "Geological and Natural History Survey (Wis.). Soil Survey Division." . . . .