T. Llew Jones Books

Tan ar y Comin

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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...

Fy Mhoboli

By T. Lew Jones, T. Llew Jones

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Barti ddu

By T. Llew Jones

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Trysorfa T. Llew Jones

By T. Llew Jones

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Cri'r dylluan

By T. Llew Jones

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Ymysg lladron

By T. Llew Jones

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A new edition of a classic novel for children about the Welsh highwayman Twm Sion Cati. First published in 1965.

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.

Penillion y plant

By T. Llew Jones

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'Penillion y Plant' comprises an illustrated collection of poetry for children, written in the Welsh language by T. Llew Jones.

Llen gwerin T. Llew Jones

By T. Llew Jones

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Y pedwerydd dyn doeth

By T. Llew Jones

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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.