| Certificate of approval of a type of measuring instrument No 34297 for the scintillation gamma radiation energy spectrometer GAMMA-1C. Enrolled in the State Register of Measuring Instrumentation under No 15294-08. |
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| Certificates of recognition of approval of the measurement device type No 1933 for gamma scintillation spectrometer GAMMA-1S. Enrolled in the Register of the State System of Uniformity of Measurement Devices of Kazakhstan under No KZ.02.03.00785-2004/15294-96 |
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