SSC SSC JE Civil 2025 Mock Test Series (Paper 1 & Paper 2) Environmental Engineering Air and Noise Pollution

औद्योगिक भवनों में शोर में कमी के लिए अभ्यास संहिता हैः 

1
IS 3483 ∶ 1965
2
IS 3792 ∶ 1978 
3
 IS 3362 ∶ 1977
4
IS 3103 ∶ 1975  
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