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Journal of Japan Society of Air Pollution
Methane concentration was measured every day from July to September 1974, at height of 4.5 m of the Nagano Research Institute for Health and Pollution (point 1), and near the surface of paddy field and at a neighborhood of the paddy field (point 2, at height of 4.6 m) during September 6-.7 and Septemberdoi:10.11298/taiki1966.10.107 fatcat:hk2zer5jgngjzidolkjoc35sea