000 00315nam a2200121Ia 4500
100 _aBates, Tony & Robinson, John
020 _a0 335 00045 2
942 _cBK
245 _aEvaluating educational television and radio
260 _aThe open University press
_c1977
082 _a371.333 Bat/Rob
300 _axviii,410
999 _c14076
_d14076