Pol Koutsakis Books

Athenian blues

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Stratos Gazis hates being called a contract killer. What he is, is a conscientious fixer. He fixes problems that are only mentioned in whispers. That very few can fix. Things that people are willin...

Athenian Blues

By Pol Koutsakis

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Baby blue

By Polychrones Koutsakes

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"Stratos Gazis hates being called a contract killer. What he is, is a conscientious fixer. He fixes problems that are only mentioned in whispers. That very few can fix. Things that people are willi...

Baby Blue

By Anne Marie Stanton Ife, Pol Koutsakis

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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.