Comparison of bioassessment results and costs between preserved and unpreserved macroinvertebrate samples from streamsKeizer-Vlek, H.E.Goedhart, P.W.Verdonschot, P.F.M.Centrum Ecosystemen - Freshwater EcosystemenBiometrishttp://library.wur.nl/WebQuery/wurpubs/404629enjournalArticle0167-6369Environmental Monitoring and Assessment2011
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