Clara Vulliamy Books

Wide awake

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A toddler wakes up and starts his day by rousing Mom and Dad from sleep, chatting away while getting dressed, and making a mess at the breakfast table.

Good night baby

By Clara Vulliamy

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A baby goes through a bedtime routine that includes a bath, story, lullaby, and being tucked in.

Ellen and Penguin

By Clara Vulliamy

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A young girl and her stuffed penguin are too shy to join in the fun at the playground, until they make friends with another bashful girl and her toy monkey.

The Bear With Sticky Paws

By Clara Vulliamy

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Pwtyn

By Clara Vulliamy

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Mango Bambang. El no cerdo

By Polly Faber, Clara Vulliamy, Julia Alquezar

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Mango Bambang. Tapir a bordo

By Paula Fernandez Espriu, Polly Faber, Clara Vulliamy

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Mango Bambang. El problema del pequeno tapir

By Paula Fernandez Espriu, Polly Faber, Clara Vulliamy

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Marshmallow Pie the Cat Superstar

By Clara Vulliamy

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Marshmallow Pie the Cat Superstar

By Clara Vulliamy

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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.