National demonstration
Singh, K.N., Patel, R.K.
National demonstration A guide book by K.N. Singh and R.K. Patel - New Delhi Division of Agricultural Extension Indian Agricultural Research Institute - 13 p.
Agricultural Extension
63(071.7)(54) / S 617 N
National demonstration A guide book by K.N. Singh and R.K. Patel - New Delhi Division of Agricultural Extension Indian Agricultural Research Institute - 13 p.
Agricultural Extension
63(071.7)(54) / S 617 N