Robert Petersen Books

Childhood And Adolescent Drug Abuse: A Physician'S Guide To Office Practice

By Robert C. Petersen, Robert Petersen

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Settlements, Kinship And Hunting Grounds In Traditional Greenland

By Robert Petersen

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Comics, Manga, And Graphic Novels

By ABC-Clio, Robert S. Petersen, Robert Petersen, Praeger Publishers (Westport), Petersen, Robert S

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Too Often The Popularity And Subject Matter Of Comic Books Is Perceived As A Purely Modern American Phenomenon That Only Arrived In The 20th Century And Is Virtually Nonexistent Outside The United...

Comics, Manga, And Graphic Novels: A History Of Graphic Narratives

By ABC-Clio, Robert S. Petersen, Robert Petersen, Praeger Publishers (Westport), Petersen, Robert S

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Too Often The Popularity And Subject Matter Of Comic Books Is Perceived As A Purely Modern American Phenomenon That Only Arrived In The 20th Century And Is Virtually Nonexistent Outside The United...

Det Ændrede Samfund Og Børnenes Situation

By Robert Petersen

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Nunatta Oqaluttuassartaanit

By Robert Petersen

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Settlements, Kinship And Hunting Grounds In Traditional Greenland

By Robert Petersen

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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.