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Siregar, Rizki Aprianto and Hutabarat, Lolom Evalita and Tampubolon, Sudarno P and Purnomo, Candra C. (0878) Optimizing Empty Fruit Bunch (EFB) of palm and glass powder as a partial substitution material of fine aggregate to increase compressive and tensile strength of normal concrete. In: IOP Conference Series: Earth and Environmental Science. IOP Publishing, pp. 1-7.