pt. 1, no. 1. General introduction, by D. Miyadi and others. no. 2. An attempt of comparing the productivity of Lake Shinji-ko and Lake Naka-umi on the basis of input and output of total phosphorus, by Syuiti Mori. no. 3. Macro-benthic communities of Lake Shinji-ko and Lake Naka-umi, by Taiji Kikuchi. pt. 2, no. 4. Distribution of fishes and their foods, by H. Kawanabe, and others. no. 5. Seasonal changes in distribution and abundance of some decapod crustaceans, by E. Harada
