div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader042vdocumentinreader042viewer20220407005d4f5b8c88c993c2058b9dadhtml5page1jpg target=_blank img data-url=-the-sample-size-was-determ-ned-by-yamanes-formu-a-whereas-the-cluster-randomhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: centerbkkthonacthcenterbkkthonacthjournaluploaddocspit11files3pdf · The sample size was determ ned by Yamanes formu a whereas the cluster random sampling technique loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentinreader042viewer20220407005d4f5b8c88c993c2058b9dadhtml5thumbnails1jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imagea href=https:reader042vdocumentinreader042viewer20220407005d4f5b8c88c993c2058b9dadhtml5page2jpg target=_blank img 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determ ned by Yamanes formu a whereas the cluster random sampling technique loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentinreader042viewer20220407005d4f5b8c88c993c2058b9dadhtml5thumbnails3jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imagea href=https:reader042vdocumentinreader042viewer20220407005d4f5b8c88c993c2058b9dadhtml5page4jpg target=_blank img data-url=-the-sample-size-was-determ-ned-by-yamanes-formu-a-whereas-the-cluster-randomhtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: centerbkkthonacthcenterbkkthonacthjournaluploaddocspit11files3pdf · The sample size was determ ned by Yamanes formu a whereas the cluster random sampling technique loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC 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src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentinreader042viewer20220407005d4f5b8c88c993c2058b9dadhtml5thumbnails8jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=9Page 9button div class=ts-imagea href=https:reader042vdocumentinreader042viewer20220407005d4f5b8c88c993c2058b9dadhtml5page9jpg target=_blank img data-url=-the-sample-size-was-determ-ned-by-yamanes-formu-a-whereas-the-cluster-randomhtmlpage=9 data-page=9 class=ts-thumb lazyload alt=Page 9: centerbkkthonacthcenterbkkthonacthjournaluploaddocspit11files3pdf · The sample size was determ ned by Yamanes formu a whereas the cluster random sampling technique loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentinreader042viewer20220407005d4f5b8c88c993c2058b9dadhtml5thumbnails9jpg width=140 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