- screening study area. Method of screening the basic province area choice This study is to analyze the scope of research The province that choice choose in the northeast.The selection criteria from the province area for growing high. And no electrical plant biomass in bang!- collect primary data and secondary data. On the part of the data for this research. By using the data from the survey data of primary (Primary Data) including secondary data. (Secondary Data) from various organizations, such asThe Rubber Research Institute, Department of agriculture, Sindhi, etc.!
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