[ 发表于: Pollution ]
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Mixed farming systems as a way towards a more efficient use of nitrogen in European Union agriculture
1998
Oomen, G.J.M. | Lantinga, E.A. | Goewie, E.A. | Hoek, K.W. van der (Department of Plant and Crop Sciences, Group of Biological Farming Systems, Wageningen Agricultural University, Haarweg 333, 6709 RZ Wageningen (Netherlands))
Department for Environment, Food and Rural Affairs - United Kingdom
Ruminant uptake of nickel and other elements from industrial air pollution in the Norwegian-Russian border area
1995
Sivertsen, T. | Daae, H.L. | Godal, A. | Sand, G. (Department of Toxicology and Chemistry, Central Veterinary Laboratory, PO Box 8156 Dep., N-0033 Oslo (Norway))
Department for Environment, Food and Rural Affairs - United Kingdom
The measurement of methane losses from grazing animals
1995
Lockyer, D.R. | Jarvis, S.C. (Institute of Grassland and Environmental Research, North Wyke Research Station, Okehampton, Devon EX20 2SB (United Kingdom))
Department for Environment, Food and Rural Affairs - United Kingdom
Leptospirosis
1993
Ellis, W.A. | McDowell, S.
Department for Environment, Food and Rural Affairs - United Kingdom
