1. AAAAI (American Academy of Allergy, Asthma, and Immunology). 1994. National Allergy Bureau Pollen and Mold Report. Milwaukee, Wisconsin.
2. AAAAI (American Academy of Allergy, Asthma, and Immunology). 1995. National Allergy Bureau Pollen and Mold Report. Milwaukee, Wisconsin.
3. Akland, G., T.D. Hartwell, T.R. Johnson, and R. Whitmore. 1985. Measuring human exposure to carbon monoxide in Washington, DC and Denver, CO during the winter of 1982-83. Environ. Sci. Technol. 19:911–918.
4. Albrecht, E. and A. Kaul. 1967. Continuous registration of 222Rn in air varying with time. Pages 643–650 in: Assessment of airborne radioactivity in nuclear operations. International Atomic Energy Agency. Vienna, Austria.
5. Andelman, J.B. 1985a. Human exposures to volatile halogenated organic chemicals in indoor and outdoor air. Environ. Health Perspect. 62:313–318.