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Ida Duma Riris, Albinus Silalahi, Tita Juwitaningsih, Marini Damanik, Nora Susanti · 2021 · Journal of Physics: Conference Series
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Ahmad Nasir Pulungan, Agus Kembaren, Nurfajriani Nurfajriani, Feri Andi Syuhada, Junifa Layla Sihombing, Muhammad Yusuf, Rahayu Rahayu · 2021 · Polish Journal of Environmental Studies
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A.M. Sibuea, M. Amin, J.S. Rambey · 2021 · Journal of Physics: Conference Series
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Syahreza Alvan, Muhammad Isran Ramli, Hajriyanti Yatmar, Muralia Hustim, Ridwan Anas · 2021 · Lecture Notes in Civil Engineering
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R.N. Sinaga, F.A. Sinaga, A. Elvana, N. Manalu · 2021 · Journal of Physics: Conference Series
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Mailita Sari Pulungan, Derlina Nasution, Rahmatsyah · 2021 · Journal of Physics: Conference Series
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S. A. Hakim, T. Sembiring, K. Sebayang, M. Situmorang, K. Tarigan, K. Sembiring, S. Mihardi, E.N. Waruwu · 2021 · Journal of Physics: Conference Series
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Destria Roza, Rini Selly, Rudi Munsirwan, Gianna Fadhilah · 2021 · Journal of Physics: Conference Series
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Erika Revida, Februati Trimurni, Sukarman Purba · 2021 · Review of International Geographical Education Online
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Nur’Aini · 2021 · Journal of Human Behavior in the Social Environment