Nitrogen cycling in Lake Wingra. Journal of Environmental Quality, 1976, 5:182―188Isirimah,N. O.,Keeney,D. R.Dettmann. Nitrogen cycling in Lake Wingra. Journal of Environmental Quality . 1976Isirimah N O,Keeney D R,Dettmann.Nitrogen cycling in Lake Wingra. Journal of Environmental Quality ...