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Watari N., . and Inoue H., . and Hirata H., . (1997) Comparative studies on acute toxicity of pesticides to seawater and freshwater organisms. [Proceedings Paper]
Hirata H., . and Yamasaki S., . and Kohirata E., . and Maenosono H., . and Yamauchi T., . and Matsuba M., . (1997) Studies on polyculture of fish and sterile Ulva: observations of PO2 and PCO2 in fish culture farm. [Proceedings Paper]
Ungson J.R., . and Matsuda Y., . and Hirata H., . and Shiihara H., . (1997) A comparison of red sea bream Pagrus major ranching in the inner and central areas of Kagoshima Bay Japan. [Proceedings Paper]