Una Woodruff Books

Inventorum Natura

By Pliny The Elder

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Catwitch

By Una Woodruff

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Having been taught reading, writing, and a little magic by his owner, Jules the kitten is persuaded by fairies that appear through the television set to return with them to fairyland and help save...

Witches

By Colin Wilson, Una Woodruff

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"Witches" is a fully illustrated history of witchcraft and the black arts, written by the well-known authority on the occult, Colin Wilson, and illustrated by the established artist Una Woodruff, w...

Inventorum natura

By Una Woodruff

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Inventorum Natura

By Una Woodruff

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Catwitch

By Lisa Tuttle, Una Woodruff

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Amarant

By Una Woodruff

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Witches

By Una Woodruff

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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.