Titaporn Khongdee. (2016) Effects of roof modifications on growth performance and physiologicalchanges of crossbred beef heifers (Bos indicus). <i>Songklanakarin Journal of Science and Technology (SJST)</i>, <i>38</i>(2), 183-188.Titaporn Khongdee. "Effects of roof modifications on growth performance and physiologicalchanges of crossbred beef heifers (Bos indicus)". Songklanakarin Journal of Science and Technology (SJST) 38 (2016):183-188.Titaporn Khongdee. Effects of roof modifications on growth performance and physiologicalchanges of crossbred beef heifers (Bos indicus). Research and Development Office, Prince of Songkla University:ม.ป.ท. 2016.