Petz M. Books

The Bad Mood
Bad Mood
Bad Mood

By Amelie Jackowski, Petz M.

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Mona the monster girl
Mona the monster girl

By Moritz Petz

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One bright, sunny morning, Mona's worst daymare is realized when two terrifying children creep up the stairs, right into her attic.

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Mona the Monster Girl
Mona the Monster Girl

By Dusikova M., Petz M.

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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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