Mezue ahịrịokwu na-esonụ: Gustaaf "Guus" Bierings (amụrụ na 28 Septemba 1956) bụ onye ọgba tum tum lara ezumike nká nke Dutch nke na-arụ ọrụ n'etiti 1975 na 1981. O so na ndị otu Dutch ndị meriri asọmpi
1978 UCI Road World Championships ma mechie na 15th ebe na 1980 Summer Olympics na egwuregwu oge. O merikwara otu nzọụkwụ nke Olympia's Tour na 1977.