Tippathorn Masjaroon. 1995. Assessment of productivity, economic returns and cultural practices in wheat and barley production in northern Thailand. Graduate School, Chiang Mai University;
Tippathorn Masjaroon. (1995) Assessment of productivity, economic returns and cultural practices in wheat and barley production in northern Thailand . Chiang Mai University/Chiang Mai.
Tippathorn Masjaroon. Assessment of productivity, economic returns and cultural practices in wheat and barley production in northern Thailand. . Chiang Mai:Chiang Mai University, 1995.
Tippathorn Masjaroon. (1995) Assessment of productivity, economic returns and cultural practices in wheat and barley production in northern Thailand . Chiang Mai University/Chiang Mai.