[ 发表于: Pollution ]
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The effects of conservation tillage practices on benthic invertebrate communities in headwater streams in southwestern Ontario, Canada
1997
Barton, D.R. | Farmer, M.E.D. (Department of Biology, University of Waterloo, Ontario, N2L 3G1 (Canada))
Department for Environment, Food and Rural Affairs - United Kingdom
[Mechanized soil preparation and its application in highland forests effected by air pollution]
1990
Fritzsch, R. (Technische Univ. Dresden, Tharandt (Germany). Sektion Forstwirtschaft)
ZB MED Nutrition. Environment. Agriculture - Germany
