1 บทน า………………………………………………………..………….…………… 1 ภูมิหลัง……………………………………………………..……………………… 1 Aim of the research, 2 ................................................................. The importance of research, 3 .................................................................... The scope of research 3 ......................................................................... The population used in the research ............................................................... 3. Samples used in research 3 ........................................................... The variable studied 3 .......................................................................... Definitions and terminology 3 ....................................................................... Conceptual framework in research 4 ...................................................................
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