Geographical variation of Littorina obtusata (L.) in the North-Atlantic
Knudsen, J. (1949). Geographical variation of Littorina obtusata (L.) in the North-Atlantic. Vidensk. Medd. Dan. Naturhist. Foren. 111: 247-255
In: Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening. Dansk Naturhistorisk Forening: Copenhagen. ISSN 0373-3874, more
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