Van klFast for AzteHOLLYWOOD. May 25.- (UP)~ Bep Van Klaveren today wan pre* part'd to fly eaet to challenge the winner of the Jimmy MoLarnin-Barnev Ross* welterweight title [ bout after easily doeisionlng Kid Aztaea, Mexican champion, in their main event latst night.The Hollander was m a s t e r throughout most of the TO rounds as he danced about the dark-skinned fighter.The United Press score sheet gave Van Klaveren eight rounds. Azteca one and called one even.Van Klaveren weighed MOtj, Azieea 145.