Pansak Wannakao. 1993. Petrography and engineering properties of the Phu Sanao weathered granites, Amphoe Muang, Changwat Loci. Graduate School, Chulalongkorn University;
Pansak Wannakao. (1993) Petrography and engineering properties of the Phu Sanao weathered granites, Amphoe Muang, Changwat Loci . Chulalongkorn University/Bangkok.
Pansak Wannakao. Petrography and engineering properties of the Phu Sanao weathered granites, Amphoe Muang, Changwat Loci. . Bangkok:Chulalongkorn University, 1993.
Pansak Wannakao. (1993) Petrography and engineering properties of the Phu Sanao weathered granites, Amphoe Muang, Changwat Loci . Chulalongkorn University/Bangkok.