[ 发表于: Pollution ]
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[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.
ZB MED Nutrition. Environment. Agriculture - Germany
[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.))
ZB MED Nutrition. Environment. Agriculture - Germany
