| 000 | 00383nam a2200145u 4500 | ||
|---|---|---|---|
| 003 | BD-DhUET | ||
| 008 | 821020s1948 dcud 000 0 eng | ||
| 040 |
_aDLC _cDLC _dBD-DhUET |
||
| 110 | _aU. S. Dept. of Commerce | ||
| 245 | 0 | 0 | _aIonospheric radio propagation |
| 250 | _a1st ed. | ||
| 260 |
_aWashington _bU. S. Govt. _c1948 |
||
| 300 |
_aiv, 209 p. _bcharts. _c26 cm. |
||
| 942 | _cCP | ||
| 999 |
_c19788 _d19788 |
||