Sally Tolan Books

John Muir People Who Have Helped the World

By Sally Tolan

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John Muir

By Sally Tolan

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A biography of the naturalist who, among other activities, founded the Sierra Club and, as an early proponent of wilderness preservation, was influential in establishing the national park system.

John Muir

By Sally Tolan, Jamie Daniel

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France (Children of the World-Set Two)

By Rhoda Sherwood, Sally Tolan, Philippe Pierre

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Presents the life of a twelve-year-old girl and her family living in a village in Normandy describing her home and school, daily activities, amusements, and some of the customs and celebrations of...

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.