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Hilma, R., Akbar, U. and Prasetya, - 1930. OPTIMUM CONDITION OF BIOETANOL PRODUCTION VIA ACIDIC HYDROLYSIS FROM PINEAPLE (Ananas comosus Merr.) PEEL WASTE IN KUALU VILLAGE-KAMPAR. Photon: Jurnal Sain dan Kesehatan. 7, 02 (May 1930), 135-142. DOI:https://doi.org/10.37859/jp.v7i02.519.