©2013 National Research Council of Thailand
Nayana Puengpan. 1992. Salt-affected soils in northeast Thailand and strategies of their amelioration. , Tokyo University of Agriculture;
Nayana Puengpan. (1992) Salt-affected soils in northeast Thailand and strategies of their amelioration . Tokyo University of Agriculture/Kyoto.
Nayana Puengpan. Salt-affected soils in northeast Thailand and strategies of their amelioration. . Kyoto:Tokyo University of Agriculture, 1992.
Nayana Puengpan. (1992) Salt-affected soils in northeast Thailand and strategies of their amelioration . Tokyo University of Agriculture/Kyoto.