Purba IR, Nurhayati N. The Contribution of the Biota Diversity of Lake Toba to Indonesia’s Biota Wealth. jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2024 Feb. 28 [cited 2024 Nov. 22];10(2):996-1002. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/6381