Christopher Kendris Books

French Now Answer Key
Master the basics.
Master the basics.

By Christopher Kendris

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French Now A Level One Worktext
Italian Master the Basics
2001 Words for the French Cbat
301 French Verbs All the Tenses
301 Spanish verbs fully conjugated in all the tenses
French the Easy Way
French the Easy Way

By Christopher Kendris

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Presents fundamentals of French grammar for high-school students who are familiar with basic elements of the French language.

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Spanish now!
Spanish now!

By Christopher Kendris

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Spanish on the Road

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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.

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