Mared Llwyd Books

Gwraig i r Eryr a Helynt Gwion

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Yr ail gyfrol mewn cyfres wreiddiol. Mae'r cyfrolau yn 'llyfrau darllen hawdd' penigamp, a chyfrinach y llyfrau hyn yw bod dwy stori gref mewn un gyfrol a'r rheiny wedi'u hadrodd yn ffraeth mewn mo...

Cyfres Yr Onnen

By Mared Llwyd

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Anturiaethau Mistar Urdd

By Sioned Medi Evans, Mared Llwyd

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Cyfres y Gwybodyn

By Mared Llwyd

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Cyfres y Gwybodyn

By Mared Llwyd

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Archwilwyr Bychain

By Clare Beaton, Mared Llwyd

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Archwilwyr Bychain

By Clare Beaton, Mared Llwyd

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Archwilwyr Bychain

By Clare Beaton, Mared Llwyd

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Archwilwyr Bychain

By Clare Beaton, Mared Llwyd

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Wini Pot Mel

By Mared Llwyd

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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.