... part of our statement about nitrogen oxides. They did use the Jacobs-Htx- hheiser method in the Chattanooga study, but unfortunately, it was another modification of it. A double-bubbler method rather than a single-bubbler method was used.
|Title||:||Clean Air Act Oversight--1973|
|Author||:||United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Public Health and Environment|