KATHY PARKINSON Books

Cuando me siento bien conmigo mismo

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A young guinea pig explains that self-confidence comes from learning new things without being afraid of making mistakes and to remember that everyone has different qualities that make them lovable.

Cuando me siento bIen conmigo mismo

By JOANA DELGADO SANCHEZ, KATHY PARKINSON, CORNELIA MAUDE SPELMAN

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Cuando te anoro

By Cornelia Spelman

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A young guinea pig describes situations that make her worry, what being worried feels like, and how she can stop worrying. Includes note to parents and teachers.

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.