National performance audit program : 1980 proficiency surveys for sulfur dioxide, nitrogen dioxide, carbon monoxide, sulfate, nitrate, lead and high volume flow /

Mode of access: Internet.

Nitric oxide bands near 1 [mu] in shockheated air,

"Contract no. DA-30-069-ORD-3443. ARPA no. 253-62."

Shock-tube measurements of transition probabilities for oxygen and nitric oxide,

Mode of access: Internet.

Reanalysis of the effect of proposals to relax vehicle emission standards on Chicago air quality : three reports and a summary.

"April, 1982."