You can get the link to verify the id number.
> I'm still unclear how to get first URL; I'll try again tomorrow. I have got
> the IOS 14 version in Books.
Books app. Book Store. Find the book. Tap three ... and choose "share"
then "copy"
However, something has changed since I last did this (iOS 14? Or my
brain) and opening the iBooks:// URL doesn't seem to be working as it
did. Opening the https: URL still works, but open the book on the book
store, where you can then tap 'Read".
I'll look into this, as I'm sure it's still possible as this is how
iBooks Author specified links to other books, and I don't think they
would have broken that quite yet.
--
"Are you pondering what I'm pondering?"
"I think so, Brain, but wouldn't an itsy-bitsy, teeny-weenie, yellow
polka-dot one-piece be better suited for my figure?"