Biro Books

Gumdrop on the rally
Gumdrop on the rally

By Val Biro

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Gumdrop and the Farmer s Friend
Gumdrop and the Farmer s Friend

By Val Biro

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Gumdrop and the monster
Gumdrop and the monster

By Val Biro

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Gumdrop s Merry Christmas Picture Knight
Gumdrops Merry Christmas Gumdrop
Gumdrops Magic Journey Gumdrop
Gumdrops Magic Journey Gumdrop

By Biro, Val Biro

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Beyond Success 6 Copy Counter
Beyond Success 6 Copy Counter

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Gumdrop posts a letter
Gumdrop posts a letter

By Val Biro

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Gumdrop the antique car helps catch the post office van so that Mr. Oldcastle, his owner, can mail an important letter.

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Tales from Hans Andersen Ginn Reading
Mind Brain Function
Mind Brain Function

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Related Articles from our Blog

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.

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