Kerstin Gier Books

Sixteen-year-old Gwyneth discovers that she, rather than her well-prepared cousin, carries a time-travel gene, and soon she is journeying with Gideon, who shares the gift, through historical London...

Ruby Red

By Kerstin Gier

Average: 0.00, 0 Ratings

Vergissmeinnicht

Average: 0.00, 0 Ratings

Emerald green

By Kerstin Gier

Average: 0.00, 0 Ratings

Since learning she is the Ruby, the final member of the time-traveling Circle of Twelve, nothing has gone right for Gwen and she holds suspicions about both Count Saint-German and Gideon, but as sh...

A Castle in the Clouds

By Romy Fursland, Kerstin Gier

Average: 0.00, 0 Ratings

A Castle in the Clouds

By Marisa Calin, Romy Fursland, Kerstin Gier

Average: 0.00, 0 Ratings

Dream On The Silver Trilogy

By Kerstin Gier

Average: 0.00, 0 Ratings

310 pages 21 cm

The Ruby Red Trilogy Boxed Set

By Anthea Bell, Kerstin Gier

Average: 0.00, 0 Ratings

Dream a Little Dream

By Kerstin Gier

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.