Robert E. Jakoubek Books

A biography of Joe Louis describing his youth in a Detroit ghetto, his rise to heavyweight champion and major sports hero, and his role in destroying the myth of racial inferiority.

Adam Clayton Powell Jr Political Leader (Black Americans of Achievement)

By Robert E. Jakoubek

Average: 0.00, 0 Ratings

Follows the life of the black politician who rose to great power in the House of Representatives during the post-Depression era and became an influential black leader.

Harriet Beecher Stowe

By Robert E. Jakoubek

Average: 0.00, 0 Ratings

A biography of the author famous for the antislavery novel, "Uncle Tom's Cabin," but who wrote other works presenting a clear picture of nineteenth-century New England.

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.