Birthday:
John Gill
John Gill (born 16 Feb 1937) is an American mathematician who has achieved recognition for his rock-climbing. He is widely considered to be the father of American bouldering.
Birthday: Invalid Date
Birthday:
John Gill (born 16 Feb 1937) is an American mathematician who has achieved recognition for his rock-climbing. He is widely considered to be the father of American bouldering.
Birthday: Invalid Date
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