000			00454nam a2200169Ia 4500
003			NIELib
008			211019s9999||||xx |||||||||||||| ||und||
020			_a415089425
082			_a374.4 _bTHE
245			_aTheoretical Principles of Distance Education
260			_bRoutledge, _c1993. _aLondon:
300			_axiii, 272p.; _c22cm
650			_aDistance Education
650			_aAdult Education
700			_920596 _aKeegan, Desmond _eEd.
942			_2ddc _cLM
999			_c82704 _d82704