1. Hampson, J., Nature, 250, 189 (1974).
2. Foley, H. M., and Ruderman, M. A., J. geophys. Res., 78, 4441 (1973).
3. Gilmore, F. R., The Production of Nitric Oxides by Low Altitude Nuclear Explosions, J. geophys. Res., (in the press).
4. Peterson, K. R., Hlth Phys., 18, 357 (1970).
5. The 1974 World Almanac, 505 (Newspaper Enterprise, 1974).