Christopher Kurtz Books

The pup who cried wolf

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Lobo, a Chihuahua from New York City who feels he is truly a wolf in an undersized body, goes to Yellowstone National Park with his mistress and dreams of running wild with his wolf brothers.

Only a Pigeon

By Christopher Kurtz, Jane Kurtz

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Ondu-ahlem carefully trains his pigeons and prepares them for the day when he and other Ethiopian boys test the homing instinct and loyalty of their precious birds.

Dark Truths

By Christopher Kurtz, Robert D. Hunter

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Dark Truths

By Christopher Kurtz, Robert D. Hunter

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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.