Research on deep-sea animals by the "Ryofu Maru". III / Ryuzo Marumo & Yutaka Kawarada. Culture media for diatoms / Hideaki Takano. Problems in the study of primary production in the sea / Yatsuka Saijo. Techniques of primary production management used on the Indian Ocean Cruise of the 'Umitaka Maru', 1962-3 .. / Yatsuka Saijo. Preliminary survey of primary production in the northern Pacific and Bering Sea, Jun-Aug. 1960 / Teruyoshi Kawamura. Methods of permanent preparation of micro-crustacean specimens / Makato Omori.