Thanittha Khantisuk. 2005. Upgrading coffee ground waste as activated carbon using chemical activation with zinc chloride and potassium carbonate. Field of Study Appropriate Technology for Resources and Environment Development, Mahidol University;

Thanittha Khantisuk. Upgrading coffee ground waste as activated carbon using chemical activation with zinc chloride and potassium carbonate. . Bangkok:Mahidol University, 2005.

Thanittha Khantisuk. (2005) Upgrading coffee ground waste as activated carbon using chemical activation with zinc chloride and potassium carbonate . Mahidol University/Bangkok.