Senest opdateret 28. april
fra 1948
Kategori: Øvrige
pris: 375 kr – stand: ★★★★★
Indbinding: Softcover
Large format. Volumes X-A and X-B. Publication 175. Including separate (small) volume reprinted from Proceedings of the Institute of Radio Engineers Vol. 22, No. 9, September, 1934: Report of the Ionosphere Investigations at the Huancayo Magnetic Observatory during 1933 by L.V. Berkner and H.W.Wells.