خيارات البحث
النتائج 1 - 8 من 8
Reducing the impact of crop nutrients on the environment
1993
Steen, I. | Williams, T. (European Fertilizer Manufacturers Association, Brussels (Belgium))
The environment and pollution
1993
McEldowney, S. | Hardman, D.J. | Waite, S.
Direct and Indirect effects and the Long-term Risks of Air Pollution on Forest Ecosystems: Air Pollutants and Tree Ecophysiology
1993
Matyssek, R. (Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf (Switzerland))
The potential effects of long-term exposures to widespread low but raised concentrations above natural levels in Central Europe are still being discussed. This uncertainty results from an inadequate mechanistic understanding of the influence of air pollutants and other environmental factors of trees.
اظهر المزيد [+] اقل [-]Plant nutrient management and the environment
1993
Joly, C.
Water pollution in Costa Rica by residues from coffee processing and hog production
1993
Coto Campos, J.M. (Universidad Nacional, Heredia (Costa Rica))
Health impacts related to irrigated agriculture in Latin America
1993
Reiff, F. (Pan American Health Organization, Washington, DC (USA))
Inland fisheries under constraints by other uses of land and water resources in Argentina
1993
Quiros, R. (Instituto Nacional de Investigacion y Desarrollo Pesquero, Mar del Plata (Argentina))
Hazard assessment of agricultural chemicals by simple simulation models
1993
Calamari, D. (Milan Univ. (Italy)) | Barg, U.
