000 00317nam a2200121Ia 4500
001 MPKV051180
008 120911s9999 xx 000 0 und d
082 _a370
245 _aAudiovisual Instruction Vol 17
_c;
246 _aAudiovisual Instruction Vol 17
260 _aWashington
_bA.E.C.T
_c1972
650 _aEducation
999 _c49185
_d49185