What has the author Arno Kappler written?

I don't have access to real-time information, including specific details about authors and their works. To find information about Arno Kappler's writings, I recommend checking resources such as:

* Online booksellers: Sites like Amazon and Barnes & Noble often have author pages with a list of their publications.

* Library catalogs: Searching your local library's catalog can reveal books and other materials by Arno Kappler.

* Literary databases: Online databases like WorldCat and LibraryThing often include comprehensive lists of books and their authors.

* Scholarly search engines: Sites like Google Scholar can help you find research papers and academic articles by Arno Kappler.

* Wikipedia: If Arno Kappler is a notable author, they might have a Wikipedia page with a list of their works.

Please provide any further information you might have, like the genre of his writing or approximate timeframe of his work, to help narrow down the search.