000 00370nam a2200145Ia 4500
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041 _aEnglish
100 _aPowell, L. S.
245 2 _aA Guide to the use of visual aids
260 _aLondon :
_bBritish Association,
_c1998
300 _a55p.;
_c20cm
650 _aGuide Book
942 _cGB
999 _c151143
_d151143