Authors
Chapika Sangkapitux
Department of Agricultural Economics; Chiang Mai University, Thailand
Worapong Polkongkaew
Department of Agricultural Economics; Chiang Mai University, Thailand
Nongkran Pramoon
Department of Agricultural Economics; Chiang Mai University. Thailand
Sakdamnoen Nonkiti
Department of Agricultural Economics; Chiang Mai University, Thailand
Ke Nanthasen
Department of Agricultural Economics; Chiang Mai University, Thailand
