Studies in agricultural extension and management /
Ray, G.L.
Studies in agricultural extension and management / by G.L. Ray. - Delhi : Mittal Publications ; 1989. - xi ; 163 p., 21 cm.
630.715 / RAY
Studies in agricultural extension and management / by G.L. Ray. - Delhi : Mittal Publications ; 1989. - xi ; 163 p., 21 cm.
630.715 / RAY