References
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- Madison , R. D. 1948 . Fan Engineering , Buffalo , N.Y : Buffalo Forge Company .
- 1960 . “ American Standard Z9–89 ” . In Fundamentals Governing the Design and Operation of Local Exhaust Systems , American Standards Association .
- Industrial Ventilation Manual . American Conference of Governmental Industrial Hygienists .
- Ortgies , R. 1958 . Dust Piping Modifications to Prevent Material Buildup and Wear , American Air Filter Company .