John LeFevre Books

Scavenger Hike Adventures

By Kat LaFevre, John LeFevre

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Straight to Hell True Tales of Deviance Debauchery and Billion Dollar Deals

By John LeFevre

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Directo al infierno Sexo drogas y codicia

By Albert Cuesta Zaragosi, John LeFevre

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Scavenger Hike Adventures

By Kat LaFevre, John LeFevre

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Straight to hell

By John LeFevre

Average: 0.00, 0 Ratings

Over the past three years, the notorious @GSElevator Twitter feed has offered a hilarious, shamelessly voyeuristic look into the real world of international finance. Hundreds of thousands followed...

Straight to hell

By John LeFevre

Average: 0.00, 0 Ratings

Over the past three years, the notorious @GSElevator Twitter feed has offered a hilarious, shamelessly voyeuristic look into the real world of international finance. Hundreds of thousands followed...

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.