000 00575nam a22002051a 4500
020 _a9780138913588
082 _a371.3
_bVER/T
100 _aVernon S Gerlach
100 _aRob Melnick
100 _aDonald P Ely
245 _aTeaching and media:
_ba systematic approach/
_cby Vernon S Gerlach ,Rob Melnick and Donald P Ely
250 _a2nd ed.
260 _aNew Jersey:
_bPrentice-Hall,
_c1980.
300 _a420p.
650 _aEducation Audio Visual
650 _aTeaching Instructional Aids
650 _aEducation
650 _aSocial Sciences
942 _cBK
999 _c46221
_d46221