Patphithak, K. , Sriyabhaya, W. , Ketthet , B. and Yingyongsak, W. 2021. The Ecological Concept in the Literature of “By The Bank Of Brokenhearted River” By Pibulsak Lakonpol. Humanities and Social Sciences Nakhonsawan Rajabhat University Academic Journal. 8, 1 (Jun. 2021), 90–108.