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Résultats 181-190 de 229
Uptake and localization of nutritive and potentially toxic minerals in ectomycorrhizae of forest trees
1991
Kottke, I. (Tuebingen Univ. (Germany). Inst. fuer Botanik) | Oberwinkler, F.
Investigations on fine roots and mycorrhizae on the ARINUS-plots
1991
Haug, I. (Tuebingen Univ. (Germany). Spezielle Botanik) | Pritsch, K. | Oberwinkler, F.
Soil ciliates as indicators of fundamental changes in forest ecosystems
1991
Lehle, E. (Ulm Univ. (Germany). Abt. Oekologie und Morphologie der Tiere) | Funke, W.
Tillage and cropping systems
1991
Harris, B. L. | Hons, F. M. | Toombs, M. M.
Reauthorization of the Federal Water Pollution Control Act
1991
Animal waste management
1991
Sweeten, John M. | Manning, Leah | Baird, Charles
Intermediates of carbohydrate and energy metabolism in Norway spruce needels in relation to season and decline symptoms
1991
Einig, W. (Tuebingen Univ. (Germany). Physiologische Oekologie der Pflanzen) | Egger, B. | Hampp, R.
CO2-gas-exchange and transpiration of open-grown Norway spruce during the year in higher elevation of the Southern Black Forest under local air conditions with and without O3, respectively
1991
Abetz, P. (Freiburg Univ. (Germany). Inst. fuer Waldwachstum) | Kuenstle, E. | Wolfart, A.
Physiological and cytomorphological investigations of undamaged and damaged Norway spruce in the Northern Black Forest
1991
Wild, A. (Mainz Univ. (Germany). Inst. fuer Allgemeine Botanik) | Tietz, S.
Harvest-aid chemicals
1991
Supak, James Raymond | Price, Jack | Rieff, Susan Karol
