خيارات البحث
النتائج 171 - 180 من 219
Reauthorization of the Federal Water Pollution Control Act
1992
Catalytic control of air pollution
1992
Silver, Ronald G. | Sawyer, John E. | Summers, Jerry C.
Vegetative practices guide for nonpoint source pollution management
1992
Physiological and cytomorphological investigations of undamaged and damaged spruce trees in the Northern Black Forest
1992
Wild, A. (Mainz Univ. (Germany). Inst. fuer Allgemeine Botanik) | Tietz-Siemer, S.
Response of soil ciliates to fertilization in Black Forest spruce stands
1992
Lehle, E. (Ulm Univ. (Germany). Abt. Oekologie und Morphologie der Tiere) | Jans, W. | Funke, W.
Pollutant emissions of commercial and industrial wood furnaces: Registration of the state of engineering and possibilities to reduce emissions
1992
Baumbach, G. (Stuttgart Univ. (Germany). Institut fuer Verfahrenstechnik und Dampfkesselwesen (IVD). Abt. Reinhaltung der Luft) | Angerer, M.
Histological and histochemical investigations on the nutrient dynamics in forest trees with regard to the "New-type forest decline".5. Further results on the behaviour of calcium and magnesium in various tissues
1992
Fink, S. (Freiburg Univ. (Germany). Inst. fuer Forstbotanik und Baumphysiologie)
Measurement of the dry deposition rates on trees by using the natural radioactivity as a tracer
1992
Schreiber, H. (Hohenheim Univ. (Germany). Inst. fuer Physik) | Jenderek, H.
Seasonal changes in photosynthetic activity of damaged spruces in the Northern Black Forest (Schoellkopf site)
1992
Zimmer-Rinderle, U. (Karlsruhe Univ. (Germany). Botanisches Inst.) | Lichtenthaler, H.K.
Emissions of N2O, NO and NO2 from soils of spruce stands in the Black Forest
1992
Papen, H. (Fraunhofer-Institut fuer Atmosphaerische Umweltforschung, Garmisch-Partenkirchen (Germany)) | Hermann, H. | Doersch, P. | Rennenberg, H.
