00685cam a22002171  450000500170000000800410001701000170005803500210007504000280009605000200012408200220014410000200016624500510018626000520023730000210028935000090031049000290031950400320034865000430038065000440042320181210005106.0180427s1968    enk    g b    000 0 eng d  a   73358481   a(DLC)   73358481  aDLCcDLCdDLCdBD-DhBPA00aLB1043.2.G7bF500a371.333bFIM 19681 aFirth, Brian W.10aMass media in the classroom /cBrian W. Firth.  aLondon :aMelbourne, [etc.]bMacmillan,cc1968.  a127 p. :c22 cm.  a22/-0 aBasic books in education  aBibliography: p. [121]-123. 0aAudio-visual educationzGreat Britain. 0aMass media in educationzGreat Britain.