000			00746nam a2200265Ia 4500
003			HQRS
005			20190516214224.0
008			150617s2014 xx 000 0 eng d
020			_a060471727
040			_aHQRS _beng _cHQRS
041			_heng
100			_aWittich, Walter A.
245			_aInstructional technology: _bits nature and use of audiovisual materials: their nature and use
250			_a5th ed.
260			_aNew York: _bHarper and Rows, _c1973
300			_axxvi, 737p.; _c24cm.
500			_aIncludes index
650			_aAudio-visual education
650			_aEducation
650			_aEducation _xGovernment policy
650			_aTeaching aids
700			_aSchuller, Charles F.
365			_aINR
942			_2udc _cBK
999			_c13361 _d13361