| Type |  Book |
| ชื่อเรื่อง | Agricultural extension strategy for highland : a study of extension methdology to eliminate opium poppy cultivation, Wiang Pa Pao District, Chiang Rai / Faculty of Agriculture, Chiang Mai University |
| ผู้แต่ง | Chiang mai university . faculty of agriculture |
| พิมพลักษณ์ | Chiang Mai : The University, 1982 |
| รูปเล่ม | 47 p. : ill |
| หัวเรื่อง | Agricultural extension work --Chiang Rai [] |
| | Hill tribes --Economic conditions --Chiang Rai [] |
| | Opium poppy --Chiang Rai [] |