Sittiruk Pitpreecha. 2005. Gelatin production from large animal raw hide using proteolytic enzyme extracted from papaya latex. Field of Study Chemical Engineering, Chulalongkorn University;
Sittiruk Pitpreecha. (2005) Gelatin production from large animal raw hide using proteolytic enzyme extracted from papaya latex . Chulalongkorn University/Bangkok.
Sittiruk Pitpreecha. Gelatin production from large animal raw hide using proteolytic enzyme extracted from papaya latex. . Bangkok:Chulalongkorn University, 2005.
Sittiruk Pitpreecha. (2005) Gelatin production from large animal raw hide using proteolytic enzyme extracted from papaya latex . Chulalongkorn University/Bangkok.