Gary Regan Books

A thoroughly updated edition of the 2003 classic that home and professional bartenders alike refer to as their cocktail bible. Gary Regan, the "most-read cocktail expert around" (Imbibe), has revis...

The Negroni

By Gary Regan

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A history of one of the world's most iconic cocktails—originally an Italian aperitivo, but now a staple of craft bar programs everywhere—with 60 recipes for variations and contempo...

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.

Gary Regan Books

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

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