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Nishiwaki, S. ; Hirata, T. ; Ueda, H. ; Tsuchiya, Y. ; Sato, T. (1991). Studies on the Migratory Direction of Ctithon retropictus (Prosobranchia: Neritidae) by Marking-and Recapturing Method. VENUS (The Japanese Journals of Malacology). 50(3):202-210.
Nishiwaki, S. ; Hirata, T. ; Ueda, H. ; Tsuchiya, Y. ; Sato, T. (1991). Studies on the Migratory Direction of Ctithon retropictus (Prosobranchia: Neritidae) by Marking-and Recapturing Method. VENUS (The Japanese Journals of Malacology). 50(3):202-210.
