Biografi
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.
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.
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.
