20240305115920.420004 Nihon Purankuton Kenkyū Renrakukaihō 0549-4109 Nihon Purankuton Kenkyū Renrakukaihō Japan portico Portico 1953/1954 2024-03-26 Preserved : 1953: 1, 1954: 2 Preserved : 1953: 1, 1954: 2 Preserved J-STAGE Information Bulletin on Planktology in Japan 2758-8211 0549-4109 Nihon Purankuton Kenkyū Renrakukaihō