International Pothas Institute. Nutrient balances and the need for fertilizers in semi-arid and arid regions.
Citazione stile Chigago Style (17a edizione)International Pothas Institute. Nutrient Balances and the Need for Fertilizers in Semi-arid and Arid Regions.
Citatione MLA (8a ed.)International Pothas Institute. Nutrient Balances and the Need for Fertilizers in Semi-arid and Arid Regions.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.