Nutrient balances and the need for fertilizers in semi-arid and arid regions : proceedings of the 17th Colloquium of the International Potash Institute held in Rabat and Marrakech, Morocco.
- Bern : The Institute, 1983.
- 394 p.
Fertilizers.
Arid regions agriculture.
Soils and nutrition.
Fertilizers.
Arid regions agriculture.
Soils and nutrition.