DB52/T 1502-2020 Technical Guidelines for the Prevention and Control of Novel Coronavirus Pneumonia in Guizhou Provincial Examination Centers for General Colleges and Universities (English Version)
Guizhou Provincial Standard of the People's Republic of China
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DB52/T 1502-2020
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2020DB52/T 1502-2020 Technical Guidelines for the Prevention and Control of Novel Coronavirus Pneumonia in Guizhou Provincial Examination Centers for General Colleges and Universities