Voravit Janwattanakul. 1991. Degradation of photosensitized polyethylene film. Graduate School, Chulalongkorn University;
Voravit Janwattanakul. (1991) Degradation of photosensitized polyethylene film . Chulalongkorn University/Bangkok.
Voravit Janwattanakul. Degradation of photosensitized polyethylene film. . Bangkok:Chulalongkorn University, 1991.
Voravit Janwattanakul. (1991) Degradation of photosensitized polyethylene film . Chulalongkorn University/Bangkok.