Michael Grant Books

First-century Roman life is portrayed in sketches of the family histories, public careers, physical traits, private lives, and vices of Roman rulers from Julius Caesar to Domitian.

Selected Political Speeches

By Cicero

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As the Roman Republic lurched to its close, amid corruption, ruthless power struggles and gross inequality, Cicero produced some of the most stirring and eloquent speeches ever written. Whether he...

Latin Literature

By Michael Grant, Various

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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.