Warning: file_put_contents(): Only 0 of 26 bytes written, possibly out of free disk space in /var/www/ojs.unud.ac.id_backup/lib/pkp/classes/cache/FileCache.inc.php on line 90 Sitorus, Yannice, Arief Rosyidie, & Suhirman Suhirman. " Challenges in Developing Ecotourism in The Region of Lake Sentani Papua." E-Journal of Tourism [Online], (2017): n. pag. Web. 18 Jul. 2025