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ASSE(SAFE) A10.12  
ASSE(SAFE) A10.12 2022  
Safety Requirements for Excavation American National Standard Construction and Demolition Operations
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ASSE(SAFE) A10.12  
ASSE(SAFE) A10.12 2016  
Safety Requirements for Excavation American National Standard Construction and Demolition Operations
8000000 ریال  
ASSE(SAFE) A10.12  
ASSE(SAFE) A10.12 2010  
Safety Requirements for Excavation American National Standard Construction and Demolition Operations
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