خيارات البحث
النتائج 121 - 130 من 197
Occurrence of tintinnids in two polluted areas of Alexandria coast
1987
Dorgham, M.M. (Qatar Univ., Doha (Qatar). Dept. of Marine Science)
[Modifications in the planktonic ecosystem caused by pollution of Lebanese coastal waters]
1987
Lakkis, S. (Universite Libanaise, Hadeth (Lebanon). Faculte des Sciences) | Zeidane, R.
Air pollution and the US forest health [airborne chemicals]
1987
Johnson, A. (Pennsylvania Univ., Philadelphia, PA (USA). Dept. of Geology)
Air pollution - distribution, effects, and countermeasures. State of the art
1987
Ferm, M. (Institutet foer Vatten- och Luftvaardsforskning, Goeteborg (Sweden))
[Ecological effects and silvicultural conception of continuous pollution stress in Northern Federal Republic of Germany]
1987
Otto, H.J. (Niedersaechsisches Ministerium fuer Ernaehrung, Landwirtschaft und Forsten, Hannover (Germany, F.R.))
[Forest genetical perspectives of forest damages in Middle Europe and possibilities for influencing the breeding methods]
1987
Kleinschmit, J. (Niedersaechsische Forstliche Versuchsanstalt, Escherode (Germany, F.R.). Abt. fuer Forstpflanzenzuechtung)
[Anthropogenic changes of forest ecosystems. History - present - future]
1987
Ulrich, B. (Goettingen Univ. (Germany, F.R.). Inst. fuer Waldernaehrung)
[Investigations on nutrition state of beech [Fagus sylvatica L.] and spruce [Picea abies Karst.] and nutrient content on fixed sample plots in Switzerland]
1987
Flueckiger, W. (Institut fuer Angewandte Pflanzenphysiologie, Schoenenbuch (Switzerland))
Measures against acidification and air pollution - a Swedish view over a 20-year period
1987
Thunberg, B. (Statens Naturvaardsverk, Solna (Sweden))
Overview of JICA projects on BMA water pollution management
1987
Kiyoshi Hasegawa (Japan International Cooperation Agency (Japan))
