A. Marks Books

Childe Roland Picture Knight
Childe Roland Picture Knight

By A. Marks

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Impact of Technology on Society
El pequeno ganso verde
El pequeno ganso verde

By Alan Marks, A. Sansome, A. Marks, Adele Sansone

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Mr. Goose finds an abandoned egg, hatches it, and raises a peculiar green-skinned long-tailed chick, who worries about his identity but comes to recognize that he has a loving parent.

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El Pequeno Ganso Verde
The Eighteenth Century
The Eighteenth Century

By A. Marks

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The Usborne Piano Course
The Usborne Piano Course

By Kathy Gemmell, Katie Elliot, Katie Elliott

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Provides instructions for beginning pianists, from finding middle C and counting the beat to playing a series of progressively more difficult tunes.

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The Usborne book of Christmas carols
Easy Guitar Tunes
Easy Guitar Tunes

By A. Marks

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Very Easy Guitar Tunes
Very Easy Guitar Tunes

By A. Marks

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The Meaning of Work in the New Economy

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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.

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