000 00867ngm a2200217 4500
001 00517097
003 PWmBRO
005 20240602095938.0
008 850826s1972 enk 000 eng t
090 0 0 _aAV
_b621.314/T772
245 0 0 _aTransformer core part 1
_ban introduction to materials, a second level course
_mvideorecording]
260 0 0 _a[London]
_bProduction for Open University by BBC
_c1972
300 0 0 _a1 videocassette (Beta) (30 min.)
_bB & W
_c1/2 in
522 0 0 _aCredits : Film produced by Feranti Ltd.; production by Jim Stevenson
545 0 0 _aSummary : Discusses why transformers are needed in electricity industry and shows the materials used for constructing the transformer core
650 0 0 _aElectric transformers
710 2 0 _aOpen University
942 _2ddc
994 _a001023048 85238 0001
999 _c17284
_d17284