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Janasthi N, Hartanto S. Pemanfaatan Ampas Kopi sebagai Material Tambahan Produk Planter Keramik. serenade 2021 [Internet]. 2023 Aug. 1 [cited 2026 Feb. 22];2(1):196-201. Available from: https://serenade.ukdw.ac.id/index.php/serenade/article/view/68