Patrick M. O'Neil Books

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

This nicely illustrated reference for junior high and highschool students offers 20-page profiles of 93 of the world's most influential writers of the twentieth century. Arranged alphabetically, ea...

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

p. cm Vol. 13 is an index volume Includes bibliographical references and index

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

p. cm Vol. 13 is an index volume Includes bibliographical references and index

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

p. cm Vol. 13 is an index volume Includes bibliographical references and index

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

p. cm Vol. 13 is an index volume Includes bibliographical references and index

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

p. cm Vol. 13 is an index volume Includes bibliographical references and index

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

p. cm Vol. 13 is an index volume Includes bibliographical references and index

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

p. cm Vol. 13 is an index volume Includes bibliographical references and index

Great World Writers: Twentieth Century

By Editor, Patrick M. O'Neil, Patrick M. O'Neil

Average: 0.00, 0 Ratings

p. cm Vol. 13 is an index volume Includes bibliographical references and index

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.