Gephyrea /
Danielssen, D. C.
Gephyrea / by D. C. Danielssen and Johan Koren. - Christiania : Grøndahl, 1881. - 58 p. ; 37 cm. - The Norwegian North-Atlantic expedition, 1876-1878 = Den Norske Nordhavs-expedition, 1876-1878 ; Zoology = Zoologi .
Gephyrea / by D. C. Danielssen and Johan Koren. - Christiania : Grøndahl, 1881. - 58 p. ; 37 cm. - The Norwegian North-Atlantic expedition, 1876-1878 = Den Norske Nordhavs-expedition, 1876-1878 ; Zoology = Zoologi .