Welwyn Wilton Katz Books

Time Ghost

By Welwyn Wilton Katz

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False Face

By Welwyn Wilton Katz

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Third Magic

By Welwyn Wilton Katz

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Out of the Dark

By Welwyn Wilton Katz

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Come like shadows

By Welwyn Wilton Katz

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Thrilled to land a summer job on a major production of "Macbeth", sixteen-year-old Kinny soon finds everything going dangerously wrong especially after she acquires a seemingly ordinary old mirror...

Witchery Hill

By Welwyn Wilton Katz

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Summering with his father on the Channel Island of Guernsey, fourteen-year-old Mike perceives inexplicable, but undeniable, signs of witchcraft which seem directed at destroying his friends.

False face

By Welwyn Wilton Katz

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Thirteen-year-old Laney, troubled by the animosity between her divorced parents, and fourteen-year-old Tom, determined to preserve his Indian identity, form an uneasy alliance after finding rare In...

The third magic

By Welwyn Wilton Katz

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In this interpretation of the Arthurian legend, fifteen-year-old Morgan Lefevre is mistaken for one of her ancestors while visiting England, summoned to the alien world of Nwm, and caught between t...

Time Ghost

By William Loren Katz, Welwyn Wilton Katz

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In 2044 in an ecologically destroyed Canada, Sara and her friend Dani accompany Sara's grandmother to the still unspoiled North Pole and there begin an adventure in time that helps them understand...

Beowulf

By Welwyn Wilton Katz

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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.