Beynon, W., & Brown, G. (1956). Solar eclipses and the ionosphere: A symposium held under the auspices of the international council of scientific unions mixed commission on ther ionosphere in london in august 1955. Pergamon press.

Beynon, W.J.G., and G.M Brown. Solar Eclipses and the Ionosphere: A Symposium Held Under the Auspices of the International Council of Scientific Unions Mixed Commission on Ther Ionosphere in London in August 1955. London: Pergamon press, 1956.

Beynon, W.J.G., and G.M Brown. Solar Eclipses and the Ionosphere: A Symposium Held Under the Auspices of the International Council of Scientific Unions Mixed Commission on Ther Ionosphere in London in August 1955. Pergamon press, 1956.