Don L. Wulffson Books

The Kid Who Invented the Popsicle

Average: 0.00, 0 Ratings

Discover the extraordinary stories behind everyday things! Did you know that the ice cream sundae was invented because of a law forbidding the sale of ice cream on Sundays? Or that the first motorc...

UC Abracadabra to Zombie

By Don L. Wulffson

Average: 0.00, 0 Ratings

Soldier X

By Don L. Wulffson

Average: 0.00, 0 Ratings

Sixteen-year-old Erik Brandt barely knows what Germany is fighting for when he is drafted into Hitler's army in 1944. Sent to the killing fields of the Eastern Front, he is surrounded by unimaginab...

Panic five

By Ruth Hallman

Average: 0.00, 0 Ratings

On his own for the first time in his life when he joins the Navy after high school, Jeff undergoes harsh survival training and acquires the self-confidence he has been lacking.

Incredible true adventures

By Don L. Wulffson

Average: 0.00, 0 Ratings

Includes the experiences of a man caught in a tornado, a man who sailed around the Arctic in an upside-down ship, a man who took his family through the "Iron Curtain" in a tank, and a journey down...

Soldier X

By Don L. Wulffson

Average: 0.00, 0 Ratings

In 1943, sixteen-year-old Erik experiences the horrors of war when he is drafted into the German army and sent to fight on the Russian front.

Soldier X

Average: 0.00, 0 Ratings

Point Blank

By Don L. Wulffson

Average: 0.00, 0 Ratings

Kid Who Invented the Trampoline The

By Don L. Wulffson

Average: 0.00, 0 Ratings

Toybox Treasures

By Don L. Wulffson

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.