Showing 1 - 2 results of 2 for search 'CHEMICAL SAMPLING AND INSTRUMENTATION', query time: 0.30s Refine Results
  1. 1
    by Sirinapa Chinthong, Prasart Nuangchalerm
    Published 2018-03-01
    ... Educational Service Area Office 33. The cluster random sampling design was used. The instruments applied...
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  2. 2
    by Wutthisak Bunnaen, Ongart Yatniyom
    Published 2018-12-01
    ... sampling. The research instruments were a questionnaire, activity participation form, and interview form...
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    Article