Sivakumar, M V K and Huda, A K S
(1983)
Potential Agricultural Productivity in Summer and Winter Rainfall Areas.
In: Nutrient balances and the need for fertilizers in semi-arid and arid regions : proceedings of the 17th Colloquium of the International Potash Institute, May,, 1983, Rabat and Marrakech, Morroco.