Hydroiden /
Jäderholm, Elof
Hydroiden / von Elof Jäderholm - Stockholm : Almqvist & Wiksells, 1909 - 124 p. : ill. ; 32 cm - Kongliga Svenska vetenskapsakademins handlingar ; 45 Northern and arctic invertebrates in the collection of the Swedish State Museum (Riksmuseum) ; 4 .
Hydroiden / von Elof Jäderholm - Stockholm : Almqvist & Wiksells, 1909 - 124 p. : ill. ; 32 cm - Kongliga Svenska vetenskapsakademins handlingar ; 45 Northern and arctic invertebrates in the collection of the Swedish State Museum (Riksmuseum) ; 4 .