000			00335nam a22001217a 4500
082			_a371.33 _bWIT.I
100			_aWittitich, Walter A
245			_aInstructional technology : _bIts nature and use / _cby Walter A Wittich
260			_aNew York : _bHarper and Brothers, _c1973.
300			_a737p. :
650			_aTechnology
942			_cBK
999			_c617153 _d617153