Guido Sonnenberg Books

Beautyretusche mit Photoshop

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Hauptbeschreibung Schönheit kommt von außen und in jeder Frau schlummert eine Beauty- Queen. In diesem Buch plaudern Top-Fotografen aus dem Nähkästchen, sie verzichten auf jegliche Theorie und komm...

Photoshop CS4

By Klaus Kindermann

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Grosse e Book Paket Digitale Fotografie

By Stefan Weis, Guido Sonnenberg, Ramon Dorr, Cornelia Dorr, Astrid Schnieders

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Beautyretusche mit Photoshop

By Guido Sonnenberg

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Photoshop CS5

By Guido Sonnenberg

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Photoshop CS5

By Guido Sonnenberg

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Photoshop Cs5

By Ulrich Dorn, Guido Sonnenberg

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Photoshop Cs3

By Stefan Weis, Klaus Kindermann, Ulrich Dorn, Guido Sonnenberg

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Photoshop CS4

By Klaus Kindermann

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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.