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1Distribution and Density of Vegetative Hydrilla Propagules in the Sediments of Two New Zealand Lakesarticle bibliotecaUNESCO
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2by Wells, Rohan D.S., Hall, J.A., Clayton, J.S., Champion, P.D., Payne, G.W., Hofstra, D.E.
Published 1999article bibliotecaUNESCO