book, work, common knowledge, series

I have 3 books that belong in a series. The series only shows 2 of them. It also seems to thinks that 2 of the books are the same book, even though they show up correctly as 3 different books in "Your books".
At some point, I may have accidentally given a couple of them the same ISBN, but that was corrected.
Help!

Could you post links to the three offending books, please?

I have separated The Bible Psalms with the Jerusalem Commentary Volume II Psalms 58-100
by Amos Hakham
from volume 1, but don't see a series here.

As >2 gilroy: says, it's a lot easier to help if we have links.

A note: when autocombining, the computer only checks about 20 characters. Such long titles often make trouble and need to be manually separated.

http://www.librarything.com/profile/Bearpecs/stats/workdups doesn't show any more wrong combinations.

I have created the series http://www.librarything.com/series/Psalms%20with%20the%20Jerusalem%20commentary

I agree with you that the Jerusalem Psalms are 3 volumes of the same work.

I was working with Mikraot Gedolot ha-Keter. https://www.librarything.com/work/23281698/book/169166257 is one example.

I removed a lot of extraneous info from the title because it was irrelevant and the tree that was being lost in the forest was that the volumes cover different books of the Bible. As you pointed out, those long titles are confusing. (It seems to me that it happens a lot with current Hebrew religious books, like books of previous centuries, and librarians don't realize that not everything on the title page is meant to be part of the title.)

I made it a series rather than multiple volumes of one work to keep them distinct. At the link is a disambiguation notice, and I'd appreciate any suggestions or comments. Some of the books have 2 volumes. I entered Mikraot Gedolot ha-Keter: Exodus, Part 1 and M...: Exodus, Part 2 as separate books, but I probably should have entered them as 2 volumes of the same book.

Thanks for your help.