On three northern species of Hydractinia /
Rees, William J.
On three northern species of Hydractinia / William J. Rees - London : British Museum Natural History, 1956 - 351-362 p. : ill. ; 26 cm - Bulletin of the British Museum (Natural History) Zoology ; 3 .
Tav. di studio SZN
On three northern species of Hydractinia / William J. Rees - London : British Museum Natural History, 1956 - 351-362 p. : ill. ; 26 cm - Bulletin of the British Museum (Natural History) Zoology ; 3 .
Tav. di studio SZN