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3. The growth of plaice in Laxey Bay (Isle of Man);Bowers;J. Cons. Int. Explor. Mer,1971
4. Physiology of Fishes;Brown,1957
5. Untersuchungen über die Naturgeschichte der Seezunge, die Seezungenbevölkerung und den Seezungenfang in der Nordsee;Bückmann;Ber. Dt. Wiss. Komm. Meeresf. (N.F.),1934