91福利社

Use 91福利社.com or the new 91福利社 App to listen to 91福利社 podcasts, Radio 4 and the World Service outside the UK.

Episode details

World Service,23 Jan 1995,8 mins

Available for over a year

How is a bicycle a six-dimensional object? And what does the number two have to do with it?

Programme Website
More episodes