Low-Frequency Waves and Irregularities in the Ionosphere: Proceedings of the 2nd Esrin-Eslab Symposium, Held in Frascati, Italy, 23–27 September, 1968 Astrophysics and Space Science Library, nr. 14 Editat de N. D'Angelo 23 aug 2014 Paperback Preț: 376.76 lei 43-57 zile