David Emanuel Hoffman Books

The Billion Dollar Spy

By David E. Hoffman, David Emanuel Hoffman

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From the author of the Pulitzer Prize-winning history The Dead Hand comes the riveting story of a spy who cracked open the Soviet military research establishment and a penetrating portrait of the C...

The Billion Dollar Spy: A True Story Of Cold War Espionage And Betrayal

By David E. Hoffman, David Emanuel Hoffman

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The Billion Dollar Spy

By David E. Hoffman, David Emanuel Hoffman

Average: 0.00, 0 Ratings

The Billion Dollar Spy: A True Story Of Cold War Espionage And Betrayal

By David E. Hoffman, David Emanuel Hoffman

Average: 0.00, 0 Ratings

Szpieg za miliard dolarow

By Rees

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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.