Helen Thompson Books

An experimental study of the beginning reading of deaf-mutes.
Journey toward wholeness
Journey toward wholeness

By Helen Thompson

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Travel math
Travel math

By Helen Thompson

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Discusses the mathematics involved in traveling, including luggage size, money exchange, and gas mileage.

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Travel math
Travel math

By Helen Thompson

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Discusses the mathematics involved in traveling, including luggage size, money exchange, and gas mileage.

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Understanding the stock market
Understanding the stock market
Cost of living
Cost of living

By Helen Thompson

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Cost of living
Cost of living

By Helen Thompson

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Investing money
Investing money

By Helen Thompson

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Understanding credit
Understanding credit

By Helen Thompson

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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.

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