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Iswanto Suwarno, Muhammad Ahmad Baballe, Irfan Ahmad, Erwin L. Rimban, Mohammad Aljanabi and Nia Maharani Raharja 2022. Application of blender speed control technology in the processing of salak pondoh into coffee in Sibolong Hamlet . Jurnal Pengabdian dan Pemberdayaan Masyarakat Indonesia. 2, 3 (Mar. 2022), 92–98. DOI:https://doi.org/10.59247/jppmi.v2i3.74.