F-layer ionization patches in the polar cap / E.J. Weber, J. Buchau, J. G. Moore, J. R. Sharber, R. C. Livingston, J. D. Winningham, B. W. Reinisch.E. J. Weber1983EN
Followup and evaluation study of returned International Cooperation Administration participants in Egypt who have received training in the United States / John B. Stabler, E. Theodore Mogannam.John B. Stabler1957EN