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,:ม.ป.ท.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. ม.ป.ท.: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. ม.ป.ท.:Mahidol University, 1989. Print.