| Type |  Book |
| ชื่อเรื่อง | 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/Morroco |
| พิมพลักษณ์ | Bern, Switzerland : International Potash Institute, 1983 |
| รูปเล่ม | 394 p. : ill., maps ; 23 cm |
| หัวเรื่อง | Arid regions agriculture --Congresses [] |
| | Fertilizers --Arid regions --Congresses [] |
| | Plants --Nutrition --Congresses [] |