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This work is licensed under a Creative Commons Attribution 4.0 International License.
Wahyu Hadiyansyah Nasution
FMIPA, Universitas Negeri Medan, Indonesia
Indonesia
FMIPA, Universitas Negeri Medan, Indonesia
Aswarina Nasution
FMIPA, Universitas Negeri Medan, Indonesia
Indonesia
FMIPA, Universitas Negeri Medan, Indonesia
Ashar Hasairin
FMIPA, Universitas Negeri Medan, Indonesia
Indonesia
FMIPA, Universitas Negeri Medan, Indonesia
Tri Harsono
FMIPA, Universitas Negeri Medan, Indonesia
Indonesia
FMIPA, Universitas Negeri Medan, Indonesia
Wina Dyah Puspita Sari
FMIPA, Universitas Negeri Medan, Indonesia
Indonesia
FMIPA, Universitas Negeri Medan, Indonesia
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