Title: Topschaatsen 3
Description: The rise and fall of professional speed skating in the 1970ies, and the relation between the professional league (ISSL) and the ruling amateur league, the ISU.
Subjects: speed skating, ard schenk, kees verkerk, Skating, Netherlands
People: Ard Schenk (1944-), kees verkerk, eddy verheijen, erhard keller, hasse börjes, peter nottet, Atje Keulen-Deelstra, jan bols
Time periods: 1972-1973