ENO/RO Guides

I've made a beginning at entering series information for the ENO/RO Guides, but I'm running into a predictable problem: so many of the guides are catalogued under the name of the composer, so that associated books -- not the Guides themselves -- are also being brought into the series. If anyone has a way out of this, I'd be eager to hear it. The series is here

http://www.librarything.com/series/Opera%20Guides%20in%20association%20with%20En...