000 | 00419nam a2200169Ia 4500 | ||
---|---|---|---|
008 | 170901s1989 xx 000 0 und d | ||
020 | _a0415020905 | ||
082 |
_a378.03 _bG20U |
||
100 | _aGarrison, D. R. | ||
245 | 0 | _aUnderstanding Distance Education | |
260 |
_aLondon _bRoutledge _c1989 |
||
300 | _a139 | ||
650 | _aEducation | ||
650 | _aSocial sciences | ||
653 | _aDistance ducation | ||
942 |
_2ddc _cBK |
||
999 |
_c4317 _d4317 |