| 000 | 00417nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 160615s9999 xx 000 0 und d | ||
| 100 | _aVAN VELTHOVEN(P F J) | ||
| 245 | _aMedium scale irregularities in the ionospheric electron content. Ph.D. Thesis | ||
| 260 | _aUtrecht | ||
| 260 | _bDrukkerij Elinkwijk bv | ||
| 260 | _c1990 | ||
| 300 | _a245 p. | ||
| 942 | _cBooks | ||
| 999 |
_c19246 _d19246 |
||