2 Books or 1? The Sleeper Awakes vs When the Sleeper Wakes

[Steve]

H. G. Wells published a serial called "When the Sleeper Wakes" in 1898/1899. Those serials were collected and published together in book form under the same title. In 1910, Wells took the material used to create the serial and rewrote it to form a novel, titled, "The Sleeper Awakes". There are plot and text differences between the two but they do contain a similar story with similar characters. Both titles are still in print today. For example on Amazon:

When the Sleeper Wakes
http://www.amazon.com/dp/1522906177/

The Sleeper Awakes
http://www.amazon.com/dp/1481951157/

My question is, should Goodreads consider these as two distinct books or as one? At present they seem to be merged together as one book.

[rivka, Former Moderator]

In general, revised books are combined with the original. This seems similar.