Fundamentals in Industrial Ventilation will be held September 17-20, 2012, and Practical Applications of Useful Equations will be held September 21, 2012 at the ACGIH® Professional Learning Center in Cincinnati, Ohio. Earlybirds who register for either course on or before August 20, 2012 will save $100.00; those who register for both courses by the earlybird deadline will save over $200.