Jean Hager Books

The Grandfather Medicine

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Murder They Wrote

By Nancy Pickard, Sally Gunning, Jane Dentinger, Marjorie Eccles, Janet Laurence, Kate Kingsbury, Marlys Millhiser, Jean Hager, Mary Daheim, Ellen Hart

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When they go to live with their eccentric great-uncle, three orphans realize that their complete acceptance into the community depends on proving that their great-great-grandfather was not a traito...

The secret of Riverside Farm.

By Jean Hager

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During their three month stay on an Oklahoma farm, twelve-year-old Alison and her brother uncover and solve a mystery.

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.

Jean Hager Books

The Grandfather Medicine

Night walker

Ghostland

Murder They Wrote

Bride and doom

Weigh dead

Dead and buried

Terror in the sunlight

The whispering house.

The secret of Riverside Farm.

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