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Additional information
Translated from Izmeritel'naya Tekhnika, No. 9, pp. 79–81, September, 1977.
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Gushchin, V.A., Kollerov, D.K. Instruments for testing air-pollution gas analyzers. Meas Tech 20, 1365–1368 (1977). https://doi.org/10.1007/BF00817580
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DOI: https://doi.org/10.1007/BF00817580