T. Llew Jones Books

The story of Tim's adventures, when the gipsy boy is left alone on Glanrhyd common after his grandfather's death, with only the caravan, a pony and the foal born the night of his grandfather's deat...

Tan ar y Comin

By T. Llew Jones

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Dirgelwch yr ogof

By T. Llew Jones

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A new edition of an adventure novel about the smuggler's world around Cwmtydu on the Cardiganshire coast, 1788-90. First published in 1977.

Dirgelwch yr ogof

By T. Llew Jones

Average: 0.00, 0 Ratings

A new edition of an adventure novel about the smuggler's world around Cwmtydu on the Cardiganshire coast, 1788-90. First published in 1977.

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.