Please, add Lletres Lliterariu 4

[nats]

* Title: Lletres Lliterariu 4

* Author(s) name(s): VV.AA.

* ISBN (or ASIN): AS-2.577-2009

* Publisher: Academia de la Llingua Asturiana

* Publication date: 2012

* Format: paperback

* Page count: 132

* Language: Asturian

* Link to the photo: https://www.dropbox.com/scl/fo/m942ft...

*Source: photo taken by myself

[Javier]

That is not a valid ISBN. ISBNs are 10 or 13-digit numbers and do not include letters (except the letter X in some ISBN-10).

Also, we do not only need a cover image but we need to verify the book data as well. Please provide a quick photo of the publication information page (the one where the ISBN, publication date, etc. are printed).