two different books appear as different editions of the same book

[Christine]

Hello, both part one and part two of "Revolt in Berlin" by Noel Hynd are listed as different editions of the same book, though they are two separate books. Can they be fixed?
Part one: https://www.goodreads.com/book/show/7...
Part two (kindle): https://www.goodreads.com/book/show/2...
Part two (paperback): https://www.goodreads.com/book/show/2...