Paul Ruditis Books

The brewing storm

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The Brewing Storm Earth, air, fire, water -- A child must bring them all together. Calm the shaking, quell the slaughter Tonight's the night -- it's now or never. Despite wacky weather threatening...

The Watcher s Guide Volume 3

By Paul Ruditis, Various

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Presents a complete episode guide to seasons five, six, and seven of "Buffy the Vampire Slayer," and includes character descriptions, photographs, and other facts and anecdotes about the television...

Roswell Pop Quiz

By Paul Ruditis

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Star Trek Voyager companion

By Paul Ruditis

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Witch way did she go?

By Paul Ruditis

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The West Wing

By Paul Ruditis, Ian Jackman

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Topsy turvy Sabrina the Teenage Witch

By Paul Ruditis

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Topsy Turvy

By Paul Ruditis

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Where in the world is Sabrina Spellman?

By Paul Ruditis

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Shockwave

By Paul Ruditis

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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.