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DTW. Deutsche Tierarztliche Wochenschrift|December 1, 1992
[A model trial for prophylaxis in intensive fish culture]O Schmitz-Schlang
DTW. Deutsche Tierarztliche Wochenschrift|December 1, 1992
[Nitrogen and chemical oxygen demand burden of waste water caused by trout raising influenced by the protein content of the feed]C Schuster, H Stelz, O Schmitz-Schlang
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