| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| ELF-VLF Radio Wave Propagation: Proceedings of the NATO Advanced Study Institute held at Spåtind, Norway, April 17-27, 1974 | 978-9O-277-O5O3-7 (9O-277-O5O3-8) | 1974 |
A. H. · J. A. · J.A. Holtet · J. H. · Jan A.