回滚或将整个svn存储库还原为旧版本

I messed up on my SVN repository and now need to revert the entire repository from revision 28 to 24 and don't want to deal with diffs or conflicts. Is there a quick and simple way to do this? I've been able to revert back single files before fine with the merge command - but in this instance it wants to add all of the files back into the repository from revision 28 when all I really want to do is delete them.I messed up on my SVN repository and now need t