Christopher S. Wren Books

Assigned to cover yet another ethnic conflict, T.K. Farrow, a jaded newspaperman, finds himself competing for scoops against Cassandra Benoit, a fresh-faced Canadian schoolteacher-turned-amateur re...

The Cat Who Covered The World: The Adventures Of Henrietta And Her Foreign Correspondent

By Christopher S. Wren

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The Cat Who Covered the World

By Christopher S. Wren

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Walking to Vermont

By Christopher S. Wren

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Walking tours through regions in New York, Connecticut, Massachusetts, Vermont, and New Hampshire are complemented by the author's description of ecological oddities, natural element challenges, an...

The cat who covered the world

By Christopher S. Wren

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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.