Robert Hagstrom Books

Warren Buffett remains one of the most sought-after and watched figures in business today. He has become a billionaire and investment sage by buying chunks of companies and holding onto them, manag...

The Warren Buffett Way

By Robert Hagstrom

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First published in 1994, THE WARREN BUFFET WAY gave investors their first in-depth look at the innovative investment and business strategies behind this living legend's spectacular success. Tracing...

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.