Mara Grunbaum Books

Black Bears

By Mara Grunbaum

Average: 0.00, 0 Ratings

Black Bears

By Mara Grunbaum

Average: 0.00, 0 Ratings

Bison

By Mara Grunbaum

Average: 0.00, 0 Ratings

Sea turtles

By Mara Grunbaum

Average: 0.00, 0 Ratings

Did you know that sea turtles can live to be 100 years old or that they can migrate up to 2,800 miles from their birthplace? These amazing animals are also at risk due to pollution and illegal fish...

Orangutans

By Mara Grunbaum

Average: 0.00, 0 Ratings

Sea Turtles

By Mara Grunbaum

Average: 0.00, 0 Ratings

Orangutans (Nature's Children)

By Mara Grunbaum

Average: 0.00, 0 Ratings

Discover why tese amazing apes are at risk due to habitat loss.Nature's Children series provides young readers (Ages 8-10) with fascinating information about the planet's most incredible wildl...

Liebe Evolution ist das dein Ernst

By Mara Grunbaum

Average: 0.00, 0 Ratings

Llamas Wild Life LOL

By Mara Grunbaum

Average: 0.00, 0 Ratings

Greenhouse Effect a True Book Understanding Climate Change

By Mara Grunbaum

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.