خيارات البحث
النتائج 251 - 260 من 329
[Studies on the occurrence of damaging and useful insects in afforestation sites of the Eastern Ore Mountains effected by air pollution]
1990
Pohris, V. (Technische Univ. Dresden, Tharandt (Germany). Sektion Forstwirtschaft) | Ness, T.
[Effects of SO2 on the development of the root system of Norway spruce (Picea abies Karst.) in the Ore Mountains]
1990
Mauer, O. | Palatova, E.
[Studies on the seed production of Pinus contorta Dougl.]
1990
Kobliha, J. (Vysoka Skola Zemedelska, Brno (CSFR). Lesnicka Fakulta)
[Plant succession on clear cut areas and silvicultural consequences]
1990
Irrgang, S. (Technische Univ. Dresden, Tharandt (Germany). Sektion Forstwirtschaft)
[Forest protection measures in afforestation sites planted with tree species suitable for the conversion of stands of the Ore Mountains damaged by air pollution]
1990
Prien, S. (Technische Univ. Dresden, Tharandt (Germany). Sektion Forstwirtschaft) | Otto, L.F.
[The velocity of wind as additional factor contributing to damage in a Norway spruce area effected by SO2]
1990
Liebold, E. (Technische Univ. Dresden, Tharandt (Germany))
Contaminant monitoring programmes using marine organisms: quality assurance and good laboratory practice
1990
Effect of the chemical composition of industrial dusts on forest floor organic matter accumulation
1990
Grodzinski, W. | Greszta, J. | Laskowski, R. | Maryanski, M. | Rozen, A. (Department of Ecosystem Studies, Institute of Environmental Biology, Jagiellonian University, 30-060 Krakow (Poland))
Phosphorus removal from wastewater
1990
Bowker, Robert P. G. | Stensel, H. David
Contamination of ground water
1990
Barcelona, Michael J.
