Robert Papp Books

God, Can You Hear Me?

By Rev Run, Robert Papp, Justine Simmons

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The Cupcake Caper

By Gertrude Chandler Warner

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It's a delicious new mystery with the Boxcar Children as they help catch a cupcake thief! Mama Tova's shop in Greenfield is so famous that every day, people line up around the block to buy her cupc...

The Ghost in the First Row 2009 Paperback Reprint

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P Is for Princess

By Steven Layne, Deborah Layne, Robert Papp, Lisa Papp

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King Kong Color and Activity Book

By Sadie Chesterfield, Peter Bollinger, Robert Papp, Catherine Hapka

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Giant Yo Yo Mystery

By Robert Papp, Gertrude Chandler Warner

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Vanishing Passenger

By Robert Papp, Gertrude Chandler Warner

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Sword of the Silver Knight

By Robert Papp, Gertrude Chandler Warner

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Game Store Mystery

By Robert Papp, Gertrude Chandler Warner

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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.