Christopher Gregorowski Books

Why a donkey was chosen

By Christopher Gregorowski

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Because he is the most humble of beasts, a donkey is chosen to carry the Messiah's mother.

Why a donkey was chosen

By Christopher Gregorowski

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Bill Davis

By Christopher Gregorowski

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"Illustrated in colour with photographs of [Bill Davis's] sculptures and reproductions of his graphic works, this title covers six decades of his artistic output and tells the story of his life. It...

Fly Eagle Fly

By Christopher Gregorowski

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Fly, eagle, fly!

By Christopher Gregorowski

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A farmer finds an eagle and raises it to behave like a chicken, until a friend helps the eagle learn to find its rightful place in the sky.

Fly Eagle Fly

By Christopher Gregorowski

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Fly Eagle Fly

By Christopher Gregorowski

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Israel diary

By Christopher Gregorowski

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The Bible for Young Children

By Christopher Gregorowski, Louise Smit

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Fly, eagle, fly!

By Christopher Gregorowski

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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.