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| Cast |
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| Credits |
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| Directed by | Guy BRENTON |
| Production Companies | Morse Films |
| | Ballad Films |
| Presented by | Polio Research Fund |
| Commissioned by | The National Fund for Research into Poliomyelitis and Other Crippling Diseases |
| Assistant Director | S. LITTLE |
| Written by | Guy BRENTON |
| Cameraman | Dick POPE |
| 1st Assistant Cameraman | Vishnu MATHUR |
| Editor | Norman COHEN |
| 1st Assistant Editor | John CROME |
| 2nd Assistant Editor | Donald ARTHUR |
| Music and lyrics by | Ewan MacCOLL |
| | Peggy SEEGER |
| Musicians | Brian DALY |
| | Alf EDWARDS |
| | Peggy SEEGER |
| | Bruce TURNER |
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