Halfdan Nielsen
Halfdan Nicolaus Nielsen was a Norwegian speedskater.
He was the second registered world record holder in 10,000 m, when he improved Oskar Fredriksen's record in Stockholm in 1893.
Halfdan Nicolaus Nielsen was a Norwegian speedskater.
He was the second registered world record holder in 10,000 m, when he improved Oskar Fredriksen's record in Stockholm in 1893.