Rattanachai Imsamranrat. 1989. A comparative study on socio-economic conditions between farmers living in irrigated and non-irrigated areas of electrical pumping irrigation project in northern Thailand. Faculty of Graduate Studies, Mahidol University;

Rattanachai Imsamranrat. A comparative study on socio-economic conditions between farmers living in irrigated and non-irrigated areas of electrical pumping irrigation project in northern Thailand. . Bangkok:Mahidol University, 1989.

Rattanachai Imsamranrat. (1989) A comparative study on socio-economic conditions between farmers living in irrigated and non-irrigated areas of electrical pumping irrigation project in northern Thailand . Mahidol University/Bangkok.