Chaudhri, D.P.. Education, Innovations and Agricultural Deveopment / - 1st ed / - New Delhi-2 : Vikas Publishing House Pvt. Ltd.. - p127 : ISBN: 0-7069-0741-8 Subjects--Topical Terms: Economics Dewey Class. No.: X8(J).44.9S`N72<-N62 / L9;2