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Resultados 1-4 de 4

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))

farms nitrogen hortalizas suelo explotaciones agrarias organic fertilizers union europeenne sistemas de explotacion nitrogeno systeme d'exploitation agricole polyculture elevage production vegetale ...
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))

noruega wild animals reno metales renne copper pollution atmospherique element chimique elan federacion de rusia niquel norvege ...
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))

united kingdom sheep pastoreo ovin technique analytique ovinos tecnicas analiticas paturage fermentacion metanica royaume uni fermentation methanique ...
Department for Environment, Food and Rural Affairs - United Kingdom
Leptospirosis

1993

Ellis, W.A. | McDowell, S.

sheep leptospirose leptospirosis ovin ovinos cerdo leptospira interrogans ...
Department for Environment, Food and Rural Affairs - United Kingdom