You have requested access to download the full text of the source (ID: 50491):
Imajima, Minoru. (1997). Polychaetous annelids from Sagami Bay and Sagami Sea collected by the Emperor Showa of Japan and deposited at the Showa Memorial Institute, National Science Museum, Tokyo. Families Polynoidae and Acoetidae. National Science Museum Monographs. 13: 1-131.