Duplicate entries of book with no ISBN or alternate cover reference.

[Miriam]

I came across some duplicate entries with no ISBN or alternate cover reference of a classic, To Kill a Mockingbird by Harper Lee. In an attempt of cleaning the archive I separated all the duplicate editions from the main book and deleted several but was left with 3 which, when trying to delete to leave only one, marks the error "Only super-librarians can delete books with so many reviews".

The left duplicate editions are the following
To Kill a Mockingbird
To Kill a Mockingbird
To Kill a Mockingbird

They should be merged into a single one and combined into the main book To Kill a Mockingbird

[Amanda]

Done

[Miriam]

Great. Thanks!