Combining question

[Antonomasia]

Here are two sets of editions of Jane Austen's Love and Freindship
http://www.goodreads.com/work/edition...
http://www.goodreads.com/work/edition...
The first set mostly includes titles which include other juvenilia. But by the page count it's evident some don't - or don't contain all the same works.
The second lot also has to contain some collections, not just the single piece, because of the page numbers.

What, if anything, to do with them?

[Paula]

If they do not contain the same works as other editions then they should be separated with librarians notes added not to combine since they contain different content

[Antonomasia]

Though it's impossible without a silly amount of work to find out which editions contain which works. (And some would have to have lots of notes beside them to list exactly which pieces are in them.

[Emy]

Often WorldCat lists contents for newer and classic edtions, so that can help (doing that for another author at the moment.)