(NmONGOL ULSYN STANDART(B. (NzOHION BAJGUULALT(B, (NZAHIRAMVLALYN BARIMT BI^GIJN STANDARTYN \MH\TG\L(B. MNS 5140-1:2011. MNS 5140-2:2011. MNS 5140-3: 2011.s ((NuLAANBAATARs, 2012)