vongthongkham, B.; Inthalaxa, I.; vilavong, khamphan; chantawat, kitar; senpati, E. Study about Knowledge, Attitude and Self-Defense Behavior from the Spread of the Covid-19 of Students in Champasak University: The Following Goals Were Set for the Study of Students at Champasak University’s Knowledge Attitude and Behavior in Relation to the Spread of the Covid-19 Virus in Order to Protect Themselves the Purpose of study... cusj 2023, 6, 90-99.