Dwi Rohyani and Ananda, D. . (2021) “Knowledge Level Relationship With Community Behavior Concerning Mask Use During The Covid-19 Pandemic In Langkat District, North Sumatera Province”, Jurnal Ilmiah Kesehatan Diagnosis, 16(3), pp. 141-146. Available at: https://jurnal.stikesnh.ac.id/index.php/jikd/article/view/474 (Accessed: 19May2024).