What has the author Immanuel Carl Diez written?

There is no widely recognized author by the name of "Immanuel Carl Diez". It's possible there is a typo or a less common spelling.

To help me find the correct author, could you provide more context?

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* What kind of books do you think they wrote? (e.g., fiction, non-fiction, poetry, etc.)

* Do you remember any other details about the author or their work? (e.g., approximate publication date, book titles, topics covered)

With more information, I can better assist you in finding the author you are looking for.