Lora Kalkman Books

Winter

By Lora Kalkman

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Illustrations and rhyming text describe winter sights and activities, indoors and out.

Spring

By Lora Kalkman

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Illustrations and rhyming text describe outdoor sounds, sights, and activities for the spring season.

Excuse me

By Lora Kalkman

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Animals demonstrate the use of the words "excuse me" in a variety of common everyday settings.

My First Treasury Early Learning

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My First Big Book of Questions and Answers Baby Animals My First Big Book of Questions and Answers

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Grandma Loves You My First Treasury

By Lora Kalkman

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Little Rooster's morning

By Lora Kalkman, Lora Kalksman

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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.