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		Saragih, I., 		Sudiana Mahendra, M., & 		Sudarma, I.
(2020).
 VALUASI EKONOMI  JASA LINGKUNGAN EKOSISTEM HUTAN TAMAN EDEN 100, DESA LUMBAN JULU, PARAPAT, SUMATERA UTARA.
<em>ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal Of Environmental Science), 13</em>(2), 170-179.
doi:10.24843/EJES.2019.v13.i02.p05