Katherine Farris Books

Let's Speak French

By Katherine Farris

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Owl's Question Answer Book

By Katherine Farris

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Provides answers to a variety of questions about the world around us including "Why do cats have whiskers?", "Why do birds sing?", "What are UFOs?", and others.

Owl's Question Answer Book 2

By Katherine Farris

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Let s Speak French

By Katherine Farris, Linda Hendry

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Let s Speak Spanish

By Katherine Farris

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Let s Speak Spanish

By Katherine Farris

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Labeled pictures in Spanish and English introduce vocabulary for everyday scenes in the home, school, and neighborhood, as well as essential concepts such as colors, numbers and opposites.

Let s Speak French

By Katherine Farris

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Kids Question and Answer Book

By Owl Magazine, Katherine Farris

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I didn t know that

By Katherine Farris

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Singing Fish and Flying Rhinos

By Katherine Farris

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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.