About KOTANIGAWA T
About Government Industrial Development Lab. Hokkaido, Sapporo, JPN
About TAKAHASHI H
About Hokkaido Univ., Sapporo, JPN
About YOKOYAMA S
About YAMAMOTO M
About MAEKAWA Y
About coal liquefaction
About Physical/chemical treatment of coal
About Catalytic process
About 石炭液化
About 硫黄
About 助触媒
About 酸化鉄触媒
About 硫酸塩