Books to delete/merge?

[Daniel]

I'm a beginner in Goodreads and I have the following doubt:

I've found some editions of this book without any description (no Publisher, year, number of pages, ISBN...).

https://www.goodreads.com/book/show/3...
https://www.goodreads.com/book/show/1...
https://www.goodreads.com/book/show/8...
https://www.goodreads.com/book/show/4...

What's the policy in these cases? Should these books be deleted or merged?

Thanks.

[Arenda]

Merging means deleting on Goodreads.

These are indeed all duplicate editions. Thanks for reporting.
Merged the English title into the default (English) edition, merged the three Spanish titles into the most popular Spanish edition and recombined.