Is a book without an ISBN number rare?

I have a copy of E.M. Forster's A Room with a View and it doesn't have an ISBN number. It was published in 1995 though. It says it was created for the Softback Preview by arrangement with Penguin Books and it is copyright by Book-of-the-Month Club. It was printed and bound by the Bath Press in Bath. Anybody know what that means? Or why doesn't it have an ISBN number?|||It means that it was a book club edition and was not available to buy from anywhere other than the Book-of-the-Month club. It may not necessarily be worth much, unless you can find someone who is obsessed with having a complete set of Book-of-the-Month club selections and that title happens to be one of the ones that they are looking for. The odds of finding that one person are slim though.





The book does not have an ISBN as one is not required if a book is not being sold commercially. The copyright does not belong to the author as the book is in the public domain.