Geoffrey Perret Books

Ulysses S. Grant

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Not since Bruce Catton has there been such an absorbing and exciting biography of Ulysses S. Grant. “Grant is a mystery to me,” said William Tecumseh Sherman, “and I believe he is a mystery to hims...

Lincoln s War

By Geoffrey Perret

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Jack

By Geoffrey Perret

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Jack is both the first comprehensive one-volume biography of JFK and the first account of his life based on the extensive documentary record that has finally become available, including personal di...

A Country Made by War: From the Revolution to Vietnam: The Story of America's Rise to Power

By Geoffrey Perret, Geoffrey Perrett

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There's a War to Be Won: The United States Army in World War II

By Geoffrey Perret

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There s a War Being Won

By Geoffrey Perret

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America in the twenties

By Geoffrey Perret, Geoffrey Perrett

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America in the Twenties

By Geoffrey Perret

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Random House Lives of The Presidents

By Geoffrey Perret, Edmund Morris

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Winged victory

By Geoffrey Perret

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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.