Search Engine seeker
CALIBRE has a feature where you enter the book name and it will conduct a massive search covering Google Books, Sony, KOBO, Amazon, B&N, Waterstones, and many others. There is a list from which you can select where to search. It is worth looking at since it will come up with a list that allows you to connect to the site where it is for sale or , not sure about this, which library. I hope this answers the question I think is being asked.