Jennifer L. Armstrong Books

Patrick Doyle is full of blarney

Average: 0.00, 0 Ratings

Nine-year-old Patrick promises his buddies that his baseball hero will come to their playground in Hell's Kitchen, bat for him, and chase the Copperheads out.

Foolish Gretel

By Jennifer L. Armstrong

Average: 0.00, 0 Ratings

In 1855 in Galveston, Texas, ten-year-old Gretel and her two spoiled, complaining sisters all hope to be accepted as a companion to Frau Dimpel, the richest German lady in town.

That terrible baby

By Jennifer L. Armstrong

Average: 0.00, 0 Ratings

Mom blames Eleanor and Mark for making a mess of the house until she finally sees that the real culprit is the baby.

Junior Great Books (Series 4, Book One)

By Madame De Villeneuve, Jennifer L. Armstrong, Agnes Szudek, Langston Hughes, Norma Fox Mazer, Hans Christian Andersen, Philippa Pearce, Ray Bradbury, Alma Flor Ada, Humphrey Harman

Average: 0.00, 0 Ratings

Patrick Doyle is full of blarney

By Jennifer L. Armstrong

Average: 0.00, 0 Ratings

Nine-year-old Patrick promises his buddies that his baseball hero will come to their playground in Hell's Kitchen, bat for him, and chase the Copperheads out.

Death among the Dinosaurs

By Jennifer Armstrong

Average: 0.00, 0 Ratings

Missionary s Diary

By Jennifer Armstrong

Average: 0.00, 0 Ratings

Hunt for the cave of Moravia

By Jennifer Armstrong

Average: 0.00, 0 Ratings

Search for the sword of Goliath

By Jennifer Armstrong

Average: 0.00, 0 Ratings

Buried gold of Shechem

By Jennifer Armstrong

Average: 0.00, 0 Ratings

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.