Peni R. Griffin Books

The music thief

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Living in San Antonio, Texas, eleven-year-old Alma tries to cope with the drive-by shooting death of her favorite Latina singer, as well as deal with the struggles of her various family members, an...

11 000 Years Lost Amulet

By Peni R. Griffin

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Hello Kitty Hello Christmas

By Abrams

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The Ghost Sitter

By Peni R. Griffin

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The Ghost Sitter

By Peni R. Griffin

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For fifty years, ten-year-old Susie has waited for her parents and sister to come back. Each new family who moves into her home seems not to notice her, except for the young children. Susie likes c...

The Ghost Sitter

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11 000 Years Lost

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Music Thief

By Peni R. Griffin

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The Ghost Sitter

By Peni R. Griffin

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When she realizes that her new house is haunted by the ghost of a ten-year-old girl who used to live there, Charlotte tries to help her find peace.

The music thief

By Peni R. Griffin

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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.