1. Erickson, P. A. Environmental Impact Assessment, 85–204 (Academic, New York, 1979); Airborne Particles 199 (University Park Press, 1979).
2. Gerstl, S. A. W., Zardecki, A. & Wiser, H. L. Nature 294, 352–354 (1981).
3. Bach, W., Pankrath, J. & Williams, J. (eds) Interaction of Energy and Climate, 107–361 (Reidel, Dordrecht, 1980).
4. Jaenicke, R. J. Aerosol Sci. 11, 577–588 (1980).
5. Shettle, E. P. & Fenn, R. W. Air Force Geophys. Lab. Rep. AFGL-TR-79-0214 (US National Technical Information Service (NTIS accession no. ADA-085-951) (1979);