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by Walz, Norbert; Adrian, Rita; Gilbert, John; et al.
by Walz, Norbert; Nixdorf, Brigitte; International Conference on Trophic Interactions in Shallow Freshwater
by Walz, Norbert
by Walz, Norbert; Nixdorf, Brigitte
by Walz, Norbert; Adrian, Rita; Gilbert, John J.; et al.
by Brigitte Nixdorf; Norbert Walz