Vuelta a España 1998 / ed. by Jan Christiaan Bol ... [et al.]Tour de France 1998 : handbook / ed. and comp. by J. Christiaan Bol ... [et al.]Valkenburg 1998 : world championships cycling in the Netherlands / ed. by Jan Christiaan Bol ... [et al.]WCh cyclo-cross 1999 Poprad / ed. and comp. by Jan Christiaan Bol ... [et al.]Vuelta a España 1999 / ed. and comp. by Jan Christiaan Bol, Gerco van Drie, Paul RumpWch cycling Verona & Treviso / ed. and comp. by: Jan Christiaan Bol, Harry Ruiterkamp