Nitrogen loadings from agricultural activities in the Great Lakes Basin : integration report on nitrogen agricultural watershed studies / Task C (Canadian Section)- Activity 1, International Reference Group on Great Lakes Pollution from Land Use Activities, International Joint Commission ; G.H. Neilsen, J.L. Culley and D.R. Cameron
Nitrogen loadings from agricultural activities in the Great Lakes Basin : integration report on nitrogen agricultural watershed studies / Task C (Canadian Section)- Activity 1, International Reference Group on Great Lakes Pollution from Land Use Activities, International Joint Commission ; G.H. Neilsen, J.L. Culley and D.R. Cameron