Huda nurainul, Imroah N. Analysis of the Changes in 2019-nCov Before and After the Implementation of the "Required Swab PCR-Test for Entry into West Kalimantan via Air Transport" Policy. Tensor [Internet]. 16May2021 [cited 9May2024];2(1):33-4. Available from: https://ojs3.unpatti.ac.id/index.php/tensor/article/view/3276