Peter C Bjarkman Books

Ernie Banks

By Peter C. Bjarkman

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A biography of the baseball player who hit over 500 homeruns in his nineteen seasons with the Chicago Cubs.

Roberto Clemente

By Peter C. Bjarkman

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A biography of the baseball superstar from Puerto Rico who, before his untimely death in a 1972 airplane crash, was noted for his achievements on and off the baseball field.

The baseball scrapbook

By Peter C. Bjarkman

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Baseball Scrapbook

By Peter C. Bjarkman

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The biographical history of basketball

By Peter C. Bjarkman

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The New York Mets Encyclopedia

By Peter C. Bjarkman

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The Boston Celtics Encyclopedia

By Peter C. Bjarkman

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The New York Mets Encyclopedia

By Peter C. Bjarkman

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The New York Mets Encyclopedia

By Peter C. Bjarkman

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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.