Sarah Porter Books

Lost voices

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Assaulted and left on the cliffs outside of her grim Alaskan fishing village by her abusive, alcoholic uncle, fourteen-year-old Luce expects to die when she tumbles into the icy waters below, but w...

Vassa in the night

By Sarah Porter

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In the enchanted kingdom of Brooklyn, the fashionable people put on cute shoes, go to parties in warehouses, drink on rooftops at sunset, and tell themselves they ve arrived. A whole lot of Brookly...

When I cast your shadow

By Sarah Porter

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When their brother Dashiell dies, twins Ruby and Everett must save one another from his hauntings.

Christmas with clay

By Sarah Porter

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Tentacle and Wing

By Sarah Porter

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Lost Voices

By Julia Whelan, Sarah Porter

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Vassa in the Night

By Sarah Porter

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Aromatherapy and Massage

By Joanne Rippin, Sarah Porter, Lorenz

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Aromatherapy Massage

By Sarah Porter

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Massage

By Sarah Porter

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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.