| 000 | 00466nam a2200181u 4500 | ||
|---|---|---|---|
| 001 | 19789 | ||
| 003 | BD-DhUET | ||
| 008 | 821020s1948 dcud 000 0 eng | ||
| 040 |
_aDLC _cDLC _dBD-DhUET |
||
| 082 |
_a623.8411 _bUSD/1949 |
||
| 110 | _aU. S. Dept. of Commerce | ||
| 245 | 0 | 0 | _aIonospheric radio propagation |
| 250 | _a1st ed. | ||
| 260 |
_aWashington _bU. S. Govt. _c1949 |
||
| 300 |
_aiv, 209p. _bcharts. _c26 cm. |
||
| 650 | 0 | _aElectric waves | |
| 942 | _cCP | ||
| 999 |
_c19789 _d19789 |
||