00330nam a2200109Ia 450000500170000000800410001702000150005805000190007324500480009226000470014065000330018720251229182910.0251229s9999    xx            000 0 und d  a8171693113  aLB1044.88 .M43 0aMedia and education / edited by B.M. Sharma  aNew Delhi b Commonwealth Publishersc1994  aTeaching -- Aids And Devices