Please contact to the following e-mail address in case of qustions about 5th WCOC. For general, Secretariat : Prof. Wataru Ueda Catalysis Research Center , Hokkaido University West 10, North 21, Kita-ku, Sapporo 001-0021, Japan Tel: +81-11-706-9164, Fax: +81-11-706-9163 E-mail: 5wcoc@cat.hokudai.ac.jp For registration and accomodation, 5th World Congress on Oxidaton Catalysis Registration Office : c/o EC Inc., President Bldg. 5F., South 1, West 5, Chuo-ku, Sapporo 060-0061 Japan E-mail: 5wcoc@ec-inc.co.jp Tel: +81-11-231-2289, Fax: +81-11-221-0496 For congress site Sapporo Convention Center : West 10, North 11, Kita-ku, Sapporo 060-0811, Japan Tel: +81-11-817-1010, Fax: +81-11-820-4300 E-mail: scc@plaza-sapporo.or.jp