Penina Spinka Books

Picture Maker

By Penina Keen Spinka

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Picture Maker

By Penina Spinka

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The world of 14th-century America is unknown to most people and Penina Spinka's novel brings this world alive, from the tribal wars through to the Norse invasions and the fierce resistance to Chris...

MAANLIED VAN DE WOLF

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De lokroep van de wolf

By Penina Spinka

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De dochter van een indiaanse vrouw, die in de 14e eeuw door een vijandige stam is gestolen en meegenomen naar Groenland, keert terug naar het land van haar moeder.

Picture Maker

By Penina Spinka

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Picture Maker

By Penina Spinka

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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.