Comment by blywi
10 hours ago
I think the answer is in the article text "all meticulously sectioned by publisher". Book sizes differ somewhat between publishers, but each publisher tends to only print books in a few standard sizes. For the paperback editions this is even more reduced, it usually looks to me like all paperbacks from one publisher are the same size.
I never undertood why publishers couldn't agree in 5 different sizes or so.
Because they are an industry, aren’t they? Printing, binding, cover productions, transportation and storage, all that are much easier and much cheaper with a few standardized sizes.
That is exactly what I said.
They're German publishers, they probably all adhere strictly to DIN sizing.