The 6th Japan0-Korea Symposium on Catalysis, 1997-01-01
The 1st Korea-China Symp. on Environmental Engineering, 1997-01-01
96 Asian-Pacific Chemical Reaction Engineering Forum, 1996-06-27
The 5th Korea-Japan Symposium on Catalysis, 1995-01-01
10th World Clean Air Congress, 1995-01-01
The 5th Korea-Japan Symposium on Catalysis, 1995-01-01
The 7th Japan-China-U.S.A. Symposium on Catsalysis, 1995-01-01
The 5th Korea-Japan Symposium on Catalysis, 1995-01-01
Gordon Research Conf. on Catalysis, 1994-01-01
First China-Korea Int. Seminar on Chem. Tech., 1994-01-01