1. Discussion (of Wright, 1969);Albrecht;J. Air Pollut. Cont. Ass.,1969
2. Sulfur dioxide and acute effects of air pollution;Battigelli;J. Occup. Med.,1968
3. Bay Area Air Pollution Control Board0, , , Air Currents, 12(7), , Bay Area Air Pollution Control District, San Francisco, , July 1969, a.
4. Bay Area Air Pollution Control Board, , , Air Currents, 72(12), , Bay Area Air Pollution Control District, San Francisco, , December 1969, b.
5. Changes in visibility restrictions over a 20 year period;Beebe;Bull Amer. MeteoroL Soc.,1967