INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH REVIEW (IJMDRR) (www.ijmdrr.com) Bangalore-560083, INDIA. Print ISSN: 2395-1877 Online ISSN: 2395-1885 Impact Factor: 7.352 CERTIFICATE OF PUBLICATION This is to Certify that Mr./Mrs./Ms./Dr. Hak Keo, Borosh Chhim, Polyva Toch, Nito Sam, Samnang Chhin & Mardy Serey has published research paper in " International Journal of Multidisciplinary Research Review (IJMDRR) peer reviewed and refereed journal, Volume- 9, Issue- 10, October 2023, pp. 4-10." Paper Title:- " ACHIEVEMENT OF OPEN DEFECATION-FREE: LESSON LEARNED ON THE SUCCESSFUL IMPLEMENTATION OF RURAL SANITATION IMPROVEMENT IN SVAY RIENG PROVINCE, CAMBODIA. " Chief Editor Managing Editor