Rafifah, S. 2022. ANALYSIS OF LOCAL WISDOM IN THE FIELD OF BIOTECHNOLOGY IN MAKING CASSAVA TAPAI (TAPAI SINGKONG) IN PETAK TALAO MUNDAM, NAGARI KATAPIANG. SEMESTA: Journal of Science Education and Teaching. 5, 2 (Dec. 2022), 128–133. DOI:https://doi.org/10.24036/semesta/vol5-iss2/83.