Carolyn Otto Books

Celebrate Valentine s Day

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Celebrate Valentine s Day focuses on historical and cultural aspects of this holiday and the international traditions, food, and celebrations associated with it. This celebration of love includes f...

Celebrate Kwanzaa

By Carolyn B. Otto

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Celebrate Kwanzaa continues the spectacular Holidays Around the World series by focusing on this African-American holiday, which falls during the festive, gift-giving season and is celebrated by fa...

Celebrate Valentine s Day

By Carolyn Otto

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Discusses the history and traditions of Valentine's Day on February 14th as a celebration of friendship, affection, sweethearts, and love. Includes information on how the holiday is celebrated in...

Holidays Around the World Celebrate Valentine s Day

By Carolyn Otto

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Holidays Around the World: Celebrate Cinco de Mayo

By Carolyn Otto

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Celebrate Cinco de Mayo continues National Geographic’s spectacular Holidays Around the World series with this joyous feast of Mexican culture—an annual event in Mexico and an increasin...

Celebrate Cinco de Mayo

By Carolyn Otto

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Celebremos Cinco de Mayo

By Carolyn Otto

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Este libro ilustrado con fotografías para niños explora la alegre celebración en México y en Estados Unidos del Cinco de Mayo que conmemora la victoria en la batalla de Puebla del ejército mexicano...

Celebrate Chinese New Year

By Carolyn Otto

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Raccoon At Clear Creek Road

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Raccoon at Clear Creek

By Carolyn Otto

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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.