Why aren't my purchased audiobooks showing up in iTunes on PC?

My I Tunes app on pc became troublesome. I removed all traces from hard drive and downloaded again. After signing into my account, all of my album purchases, and podcast subscriptions reappeared ready for download, however, my audiobooks did not, they are not listed under hidden purchases, or on available for download. If i sign in to my account it verifies they were purchased with date and year, and yet will not download.Any help would be appreciated.

[Re-Titled by Moderator]