Koci Books

Blackie and Marie
Blackie and Marie

By Marta Koci

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Sarah's bear
Sarah's bear

By Marta Koci, Koci

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The adventures of a teddy bear who, after a wave sweeps him off a big ship, is found on an island beach by a little girl named Sarah.

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Brain Wave Vibration Audio Book with a G

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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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