COVID-19 (NHALDWARYN M\DR\LIJN SISTEMD ILR\H \MG\GIJN TUHAJ (B//s - e; (NbAQRMAA(B, (Np(B.s; (NaMBAS\LMAA(B, (Nb(B.s; 9 ((NuLAANBAATAR(B,s, 2020)
(NmONGOLs
Keywords: (NaNAGAAH UHAANs -- (NmONGOLs -- (Nm\DR\L SUDLALs; (NKORONAWIRUST HALDWARs; (NM\DR\LIJN SISTEMs; (NTARHINY SUDASNY \MG\Gs