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Nugroho, Novaro Oko and Kurniati, Dwi (2021) PENGARUH SUBSTITUSI LIMBAH ABU SEKAM PADI TERHADAP BATA BETON DENGAN PRESENTASE 4%, 6%, 8% EFFECT OF RICE HUSK ASH WASTE SUBSTITUTION ON CONCRETE BRICK WITH PRESENTATION OF 4%, 6%, 8%. Tugas Akhir thesis, University Technology Yogyakarta.