Somchai Nongnuang และ Soontorn Khamyong. (2012) Carbon sinks and nutrient accumulation in ecosystems of series of pinus kesiya plantations and fragmented forests in Boakaew highland watershed, Chiang Mai province. Chiang Mai University:ม.ป.ท.Somchai Nongnuang และ Soontorn Khamyong. 2012. Carbon sinks and nutrient accumulation in ecosystems of series of pinus kesiya plantations and fragmented forests in Boakaew highland watershed, Chiang Mai province. ม.ป.ท.:Chiang Mai University;Somchai Nongnuang และ Soontorn Khamyong. Carbon sinks and nutrient accumulation in ecosystems of series of pinus kesiya plantations and fragmented forests in Boakaew highland watershed, Chiang Mai province. ม.ป.ท.:Chiang Mai University, 2012. Print.