Prakainetra Insai. 1999. Holocene diatom analysis of the Bangkok clay. Program of Technology of Environmental, Mahidol University;
Prakainetra Insai. (1999) Holocene diatom analysis of the Bangkok clay . Mahidol University/Bangkok.
Prakainetra Insai. Holocene diatom analysis of the Bangkok clay. . Bangkok:Mahidol University, 1999.
Prakainetra Insai. (1999) Holocene diatom analysis of the Bangkok clay . Mahidol University/Bangkok.