Jean F. Blashfield Books

Chlorine

By Jean F. Blashfield

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Explains what the chemical element chlorine is, and discusses its importance to humans.

Iron and the trace elements

By Jean F. Blashfield

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Defines trace elements and discusses how they affect life on the planet.

Sparks of Life Sparks of Life

By Jean F. Blashfield, Blashfield

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Pakistan was formed in 1947 as a Muslim country and remains home to one of the world's largest Muslim populations. Since it was formed it has grown quickly and the country is working hard to improv...

The California Gold Rush

By Jean F. Blashfield

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Describes adventures and disasters in the lives of people who rushed to the gold mines of California in 1848 and explains how this event sparked the state's development.

The Oregon Trail

By Jean F. Blashfield

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An introductory history of the Oregon Trail and its significance in opening the west to settlers, including information on the people who opened the Trail, their reasons for going west, modes of tr...

The Santa Fe Trail

By Jean F. Blashfield

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Introduces the history and economic purpose of the Santa Fe Trail and the resulting settlement of the Southwest.

Cartier

By Jean F. Blashfield

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Abraham Lincoln

By Jean F. Blashfield

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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.