40 ABNT NBR 10151 Errata 1-2020 2020-03-31 Portuguese Ac煤stica - Medi莽茫o e avalia莽茫o de n铆veis de press茫o sonora em 谩reas habitadas - Aplica莽茫o de uso geral 41 ABNT NBR ISO 20474-5-2020 2020-03-31 Portuguese Earth-moving machinery - Safety Part 5: Requirements for ...