Mary SanGiovanni Books

Occult specialist Kathy Ryan returns in this thrilling novel of paranormal horror from Mary SanGiovanni, the author of Chills . . .   Some doors should never be opened . . .   In the rura...

Inside the Asylum

By Mary SanGiovanni

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From “master of cosmic horror” (Library Journal) Mary SanGiovanni, comes the latest terrifying novel featuring occult specialist Kathy Ryan . . . A mind is a terrible thing to destroy ....

Night Moves

By Mary SanGiovanni

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Chills

By Mary SanGiovanni

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Savage Woods

By Mary SanGiovanni

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196 pages ; 22 cm

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.