Howard E. Ayer

Presentation of Branch Entry Losses in Industrial Ventilation Systems

George Wahl, Howard E. Ayer, Klaus Willeke, 1991 .

Origin of the U.S. Respirable Mass Silica Standard

Howard E. Ayer, H. Ayer, 1995 .

New methods for quantitative respirator fit testing with aerosols

Howard E. Ayer, Klaus Willeke, James D. Blanchard, 1981 .