Pracha Koonnathamdee. 1998. The impacts of soybean meal import policy on soybean industry and meat industry : a case study in free trade on soybean meal market. Faculty of Economics, Thammasat University;
Pracha Koonnathamdee. (1998) The impacts of soybean meal import policy on soybean industry and meat industry : a case study in free trade on soybean meal market . Thammasat University/Bangkok.
Pracha Koonnathamdee. The impacts of soybean meal import policy on soybean industry and meat industry : a case study in free trade on soybean meal market. . Bangkok:Thammasat University, 1998.
Pracha Koonnathamdee. (1998) The impacts of soybean meal import policy on soybean industry and meat industry : a case study in free trade on soybean meal market . Thammasat University/Bangkok.