Eliot Schrefer Books

The school for dangerous girls

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Sent to a remote, run-down reform school in Colorado, fifteen-year-old Angela is placed with the better girls, but upon learning that her "dangerous" friends are being isolated and left to live as...

Endangered Ape Quartet

By Eliot Schrefer

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Endangered Ape Quartet Book 1

By Eliot Schrefer

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Endangered

By Eliot Schrefer

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Rise and fall

By Eliot Schrefer

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"Deep in the desert there sits a beautiful oasis, ruled by a monarch unlike any other in Erdas. His name is Cabaro, the Great Lion, and he reigns over a kingdom of animals, jealously guarding his g...

Threatened

By Eliot Schrefer

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Luc is an orphan, living in debt slavery in Gabon, until he meets a Professor who claims to be studying chimpanzees, and they head off into the jungle--but when the Professor disappears, Luc has to...

Spirit Animals Book 6 Rise and Fall Library Edition

By Eliot Schrefer

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Rescued

By Eliot Schrefer

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When John was ten years old his father brought back a baby orangutan from Indonesia, and Raja quickly becomes John's "brother" and responsibility--so years later, after his parents divorce, and his...

Immortal Guardians

By Eliot Schrefer

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Spirit Animals 13 Books Box Set Series 1 2 Collection

By Annie Phrommayon, Eliot Schrefer, Robert Feldhoff, Brandon Mull, Michael Hardegger, Karin Meneida, Shannon Hale, Sean Williams, Varian Johnson, Moritz Von Uslar, Maggie Stiefvater

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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.