خيارات البحث
النتائج 231 - 240 من 329
Interrelationships between mercury levels in yearling yellow perch, fish condition and water quality
1990
Suns, K. (Ontario Ministry of the Environment, Rexdale, Ont. (Canada). Water Resources Branch, Aquatic Biology Section) | Hitchin, G.
Effects of ozone and acidic precipitation on the growth and photosynthesis of red spruce after two years of exposure
1990
Kohut, R.J. (Cornell Univ., Ithaca, NY (USA). Boyce Thompson Inst. for Plant Research) | Laurence, J.A. | Amundson, R.G. | Raba, R.M. | Melkonian, J.J.
The short-term effects of wood-ash amendment on forest soils
1990
Unger, Y.L. (Maine Univ., Orono, ME (USA). Dept. of Plant and Soil Sciences) | Fernandez, I.J.
Heavy metal deposition in Polish national parks - changes during ten years
1990
Grodzinska, K. (Polish Academy of Sciences, Cracow (Poland). Inst. of Botany) | Szarek, G. | Godzik, B.
Limited downward migration of pollutant metals (Cu, Zn, Ni, and Pb) in acidic virgin peat soils near a smelter
1990
Dumontet, S. (Universita Degli Studi di Basilicata, Potenza (Italy). Istitudo di Chimica Agraria e Forestale) | Levesque, M. | Mathur, S.P.
Toxicity (EC(50)) comparisons of some animal wastes
1990
Gupta, G. (Maryland Eastern Shore Univ., Princess Anne, MD (USA). Dept. of Natural Sciences) | Kelly, P.
Accumulation and leaching of the fungicide fentin acetate and intermediates in sandy soils
1990
Loch, J.P.G. (Rijksinstituut voor Volksgezondheid en Milieuhygiene, Bilthoven (Netherlands)) | Greve, P.A. | Berg, S. van der
The use of organic and mineral fertilizers in reforestation and in revitalization of declining protective forests in the Alps
1990
Glatzel, G. (Universitaet fuer Bodenkultur, Vienna (Austria). Inst. of Forest Ecology) | Haselwandter, K. | Katzensteiner, K. | Sterba, H. | Weiszbacher, J.
The spatial heterogeneity of chemical properties in acid forest soils and its importance for tree nutrition
1990
Hildebrand, E.E. (Forest Research Inst. of Baden-Wuerttemberg, Freiburg (Germany, F.R.))
Growth variation and environmental stresses: long-term observations on permanent research plots in southwestern Germany
1990
Spiecker, H. (Forest Research Inst. of Baden-Wuerttemberg, Freiburg (Germany, F.R.))
