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Effect of composting and number of flocks on poultry litter extract bod and toxicity
1990
Gupta, G. (Maryland Eastern Shore Univ., Princess Anne, MD (USA)) | Doherty, M.
Wageningen University & Research - Netherlands
Changes of plant hormone levels in conifers subjected to immissions
1990
Frenzel, B. (Hohenheim Univ. (Germany, F.R.). Inst. fuer Botanik) | Christmann, A.
ZB MED Nutrition. Environment. Agriculture - Germany
Comparative physiological and biochemical investigations of spruce trees damaged by immissions in context with forest decline in the Northern Black Forest
1990
Wild, A. (Mainz Univ. (Germany, F.R.). Inst. fuer Allgemeine Botanik) | Forschner, W.
ZB MED Nutrition. Environment. Agriculture - Germany