While not an authoritative source... https://old.reddit.com/r/books/comments/1vugion/the_federal_... (and not actual book titles)

> Correct. I work for a large used bookstore with an online component. We're getting slammed with orders for books like the proceedings of an obscure 1992 Dutch geology conference or $500 festschrifts about D-module applications we would have previously sold to some university library. We've never once had an order for anything anybody would actually want, and most of this shit has sat on our shelves for years, if not decades. It would have eventually found its way to the discount rack and then the dumpster. At least this way we're getting some money in that we can use to buy actual cool books/collections, pay salaries and bills, etc.

So... something like Neutron Radiography: Proceedings of the First World Conference San Diego, California, U.S.A. December 7–10, 1981 - https://www.amazon.com/Neutron-Radiography-Proceedings-Confe...

I make no claims that that's a such a book that's been ordered, but that's the type of book that the reddit post references.