First telecobalt unit. Ernest Rock Carling (1954)

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First telecobalt unit. Ernest Rock Carling (1954) -

Clipped from
  1. The Ottawa Journal,
  2. 23 Nov 1954, Tue,
  3. Page 25

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  • First telecobalt unit. Ernest Rock Carling (1954)

    danimations – 24 Apr 2017