Wanigaratne, R.D.
The study of communication flow in selected villages in Sri Lanka - Colombo Agrarian research and training institute 1976 - ii, 53 p.
50138
301.143 / SRI
The study of communication flow in selected villages in Sri Lanka - Colombo Agrarian research and training institute 1976 - ii, 53 p.
50138
301.143 / SRI