Land capability classification for paddy /
Thailand.Kong Samruat Thidin.
Thailand.Kong Chamnak Thidin.
Bangkok : Soil Survey Division,
1970.
Includes location diagram.
Kalasin Province -- Khon Kaen Province -- Loei Province -- Nong Khai Province -- Sakon Nakhon Province -- Udon Thani Province
Land capability for agriculture
Irrigation farming