| 000 | 00363cam a22001217a 4500 | ||
|---|---|---|---|
| 008 | 180718b1975 xxu||||| |||| 00| 0 eng d | ||
| 020 | _a9231012487 | ||
| 082 | _aW7 Un3 | ||
| 100 | _aSommerlad, E.Lloyd | ||
| 245 |
_aNational communication systems : some policy issues and options _cby E.Lloyd Sommerlad |
||
| 260 |
_aParis _bThe Unesco Press _c1975 |
||
| 300 | _a35p. | ||
| 999 |
_c498636 _d498636 |
||