John Tyndall (@proftyndall) 's Twitter Profile
John Tyndall

@proftyndall

Natural philosopher and mountaineer. My new biography THE ASCENT OF JOHN TYNDALL in paperback 23 July 2020. Alter ego @roland_jackson

ID: 910434625

linkhttps://www.rolandjackson.co.uk/the-ascent-of-john-tyndall calendar_today28-10-2012 14:33:53

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