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Methods for ÛtÙDc a WILLIAM E BUNNEY JR MD AND DAVID A HAMBURG MD BETHESDA MD Reliable Longitudinal Observation of Behavior src=https:reader042vdocumentinreader042viewer20220305175ac30ff17f8b9aae1b8bea44html5thumbnails7jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 8button div class=ts-image a href=https:reader042vdocumentinreader042viewer20220305175ac30ff17f8b9aae1b8bea44html5page8jpg target=_blank amp-img class=ts-thumb alt=Page 8: Hamburg Individual · 280 unn - Methods for ÛtÙDc a WILLIAM E BUNNEY JR MD AND DAVID A HAMBURG MD BETHESDA MD Reliable Longitudinal Observation of Behavior src=https:reader042vdocumentinreader042viewer20220305175ac30ff17f8b9aae1b8bea44html5thumbnails8jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 9button div class=ts-image a href=https:reader042vdocumentinreader042viewer20220305175ac30ff17f8b9aae1b8bea44html5page9jpg target=_blank amp-img class=ts-thumb alt=Page 9: Hamburg Individual · 280 unn - 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