For citations:
Kolobova A.V., Konopelko L.A., Popov O.G. State primary standard of units of molar part, mass part and mass concentration of components in gas and gas condensate environs GET 154-2019. Measurement Standards. Reference Materials. 2020;16(3):23-35. (In Russ.) https://doi.org/10.20915/2687-0886-2020-16-3-23-35
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