Mangrove Economic Ecosystem Value Based Non-Used Value at Kariangau Sub District West Balikpapan District Balikpapan City. jppa [Internet]. 2014 Jul. 1 [cited 2025 Oct. 26];1(2):51-64. Available from: https://jppa.fpik.unmul.ac.id/index.php/ojs/article/view/188