Allen Roberta Books

Everything in the world there is to know is known by somebody, but not by the same knower.

By Allen Roberta

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The playful way to knowing yourself

By Allen Roberta

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Roberta Allen

By Allen Roberta

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Fast fiction

By Allen Roberta

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The dreaming girl

By Allen Roberta

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"The boundaries between appearance and reality are blurred to The Dreaming Girl, a traveler who has a brief affair with a man known only as the German. In this short novel, her imagined world becom...

Amazon Dream

By Allen Roberta

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Certain people & other stories

By Allen Roberta

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The traveling woman

By Allen Roberta

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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.