| Type |  Book |
| ชื่อเรื่อง | Studies on the improvement of soil physical properties through the utilization of organic matter in upland soils of Thailand / Norio Nakaya ... [et al.] |
| พิมพลักษณ์ | Bangkok : The Department, 1986 |
| รูปเล่ม | 278 leaves : ill.maps |
| หัวเรื่อง | Cassava --Fertilizers --Thailand [] |
| | Corn --Fertilizers --Thailand [] |
| | Humus --Thailand [] |
| | Soil physics --Thailand [] |
| | Sugarcane --Fertilizers --Thailand [] |