Kombinasi Cangkang Biji Karet Dan Sekam Padi Dalam Pembuatan Briket Sebagai R…

The aim of this research was to determine the composition of the best combination of rubber seed shells and rice husk in manufacture of briquettes. The research was conducted in July to September 2019. The results of research were used as a worksheet design for student of conventional biotechnology grade XII senior high school. The research design was divided into two stages, namely the stage o…