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HARVARD Citation
Khair, H. et al. (2022). Cleanliness assessment of Lake Toba tourist attractions from stakeholders' perspective. IOP conference series. 1098 (1), p. . [Online].
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Khair, H. et al. (2022). Cleanliness assessment of Lake Toba tourist attractions from stakeholders' perspective. IOP conference series. 1098 (1), p. . [Online].