| 000 | 00670 a2200277 4500 | ||
|---|---|---|---|
| 001 | 292531 | ||
| 020 | _a978-0-415-08942-5 | ||
| 041 | _aeng | ||
| 080 | _a374.4The | ||
| 245 | _aTheoretical principles of distance education | ||
| 250 | _a | ||
| 260 | _aLondon | ||
| 260 | _bRoutledge/Taylor and Francis | ||
| 260 | _c1993 | ||
| 300 | _axiii,272 p. | ||
| 300 | _c22 cm | ||
| 490 | _aRoutledge studies in distance education | ||
| 700 | _a | ||
| 700 | _aKeegan, Desmond | ||
| 700 | _aKeegan, Desmond | ||
| 650 | _a | ||
| 650 | _aEducation | ||
| 650 | _aDistance education , Education-Aims and objectives , Educational technology | ||
| 942 | _cBK | ||
| 942 | _2UDC | ||
| 999 |
_c152275 _d152275 |
||