About WATANABE N
About Hokkaido Inst. Technol.
About KISHI M
About Hokkaido Inst. Technol.
About 北海道工業大学研究紀要
About air pollution
About automobile exhaust gas
About Aerospheric environmental pollution
About Water quality research and measurement in general
About 酸性雨
About 酸性
About 雪
About 融雪
About 紫外線
About 吸収スペクトル
About 水質評価