Gretchen Woelfle Books

Feng che mo fang de mao

By Gretchen Woelfle

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When a dike breaks during a violent storm, flooding a little Dutch town, Nico's baby is saved by his heroic cat.

Mumbet s Declaration of Independence

By Gretchen Woelfle

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Everybody knows about the Founding Fathers and the Declaration of Independence in 1776. But the founders weren't the only ones who believed that everyone had a right to freedom. Mumbet, a Massachus...

All the world s a stage

By Gretchen Woelfle

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Twelve-year-old orphan Christopher "Kit" Buckles becomes a stage boy in a London theater in 1598, tries his hand at acting, and later helps build the Globe Theater for playwright William Shakespear...

Wind at Work

By Gretchen Woelfle

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Mumbet s Declaration of Independence

By Alix Delinois, Gretchen Woelfle

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Mumbet s Declaration of Independence

By Alix Delinois, Gretchen Woelfle

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Mumbet s Declaration of Independence

By Alix Delinois, Gretchen Woelfle

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Mumbet s Declaration of Independence

By Alix Delinois, Gretchen Woelfle

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Wind at Work

By Gretchen Woelfle

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Wind at Work

By Gretchen Woelfle

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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.