TY - CPAPER AU - S Simion AU - Angelica Nicoleta Găman AU - Alexandru Simion AU - Romeo Hriscan TI - NOISE LEVEL REDUCTION BY USING SOUND INSULATION / SOUND ABSORBENT MATERIALS T2 - SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022, Energy and Clean Technologies PY - 2022 SP - 341 EP - 348 DO - 10.5593/sgem2022/4.1/s19.44 PB - STEF92 Technology ER -