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About The Authors

Boni Agusman
Fakulitas Sains Dan Teknologi, Universitas PGRI Sumatera Barat
Indonesia

Thomson Mary
Fakulitas Sains Dan Teknologi, Universitas PGRI Sumatera Barat
Indonesia

Mourend Devegi
Fakulitas Sains Dan Teknologi, Universitas PGRI Sumatera Barat
Indonesia

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