"Environmental impact" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Controls and interactins of emissions from grasslands soils; Controls over denitrificacation and ists gaseous products in a permanet pasture soil; Determination of controls over denitrificatin using a flowing helium atmosphere system; Biogenic emission of nitric oxide from subtropical grassland; Concurrent nitrification and denitrification in compacted grassland soil; Ammonia fluxes within grassland systems; Components of ammonia volatization from cattle and sheep production; Effect of nitrogen and sodium chloride intake on production and composition of urine in dairy cows; Nitrous oxide emissions from grassland soils; effects of organic manures on emissions; Nitrogen emissions form grassland systems: models and budgets." . . . . . . "Gaseous nitrogen emissions from grasslands" . "Gaseous nitrogen emissions from grasslands"@it . "Gaseous nitrogen emissions from grasslands"@en . . . . . . . . . . . . . . . . "Miljøpåvirkning" . . "Models" . . "Kvælstofcyklus" . . "Kvælstof" . . "Nitrogen cycle" . . "Luftforurening" . . "Ecología de las praderas." . . "Grünland." . . "Ciclo del nitrógeno." . . "Lattergas" . . "Nitrogen" . . "Økologi" . . "Prati - Ecologia." . . "Farmyard manure" . . "Nitrous oxide" . . "Nitrogen, cicle del." . . "Ecology" . . "Écologie des prairies." . . "Sur nedbør" . . "Air pollution" . . "Ammoniak" . . "Modeller" . . "Husdyrgødning" . . "Grasslands" . . "Ammonia" . . "Emission" . . "Kongres" . . "Græsarealer" . . "Jordbund" . . "Pain, B.F." . . "Soil" . . "Congress" . . "Acid deposition" . . "Cycle de l'azote." . . "Praderies." . . "Stickstoffemission." . . "Ecologia." . .