Welcome to the Community and thank you for posting!
We've checked this content you shared and can confirm that unfortunately, it is no longer available on Spotify. We want all the world’s content on Spotify, but availability can change over time and between countries, depending on the permissions from rights holders.
The other audiobooks you mention may be under the same situation. If you'd like, you can send us the links so we can check them on our side as well.
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