| Rights Statement: | ||||
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| Duration: | 01:00:00 | |||
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| Producer: | John Jaworski | |||
| Contributor: | David Ponting | |||
| Publisher: | BBC Open University | |||
| Keyword(s): | Maths | |||
| Production number: | FOUM235W | |||
| Available to public: | no | |||
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