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ASHRAE 41.2   2026   Standard Methods for Laboratory Airflow Measurement R(1992) 90 $
ASHRAE 41.2   2022   Standard Methods for Laboratory Airflow Measurement 90 $
ASHRAE 41.2   2018   Standard Methods for Laboratory Airflow Measurement R(1992) 50 $
ASHRAE 41.2   1987   Standard Methods for Laboratory Airflow Measurement R(1992) 25 $