Two ISBNs on the same physical book

[Sffgeek]

I'm sure this must have been covered before, but I can't find it.
I ahve a copy of Werenight (Gerin the Fox #2)by Harry Turtledove. The ISBN inside is 0671722093. But there is a UK price label stuck over the barcode on the cover which gives the ISBN13 as 9781555940386 (=ISBN 1555940382).
Both of these ISBNs have book pages with readers. Is there an approved way of identifying that the two editions are physically the same book? - a comment in the description, perhaps?

[Jessica]

Could be the way they show it as a bargain priced book. I would have the "true" ISBN as the one printed on the book and then put the sticker one in the description.

[Sffgeek]

Jessica wrote: "Could be the way they show it as a bargain priced book. I would have the "true" ISBN as the one printed on the book and then put the sticker one in the description."

Yes, but both ISBN have already been entered as separate editions, and have reviews against them. Can we just combine them?

[Jessica]

AH missed that. Since there are already two entries, I would leave them be. If we delete the sticker one it'll probably just reimport.