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Canonical analysis of asymmetric matrices: Two applications from a study of chalk grassland in the south of EnglandMITCHLEY, J; GUARINO, L.Vegetatio (The Hague). 1984, Vol 57, Num 1, pp 53-60, issn 0042-3106Article

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Effects of copper on species composition of periphyton in a Sierra Nevada California, streamLELAND, H. V; CARTER, J. L.Freshwater biology (Print). 1984, Vol 14, Num 3, pp 281-296, issn 0046-5070Article

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