Len Lamensdorf Books

The Flying Dragon

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Willi and Louise, now seventeen years old, travel to the United States in the early 1960s to work as White House interns and, after helping avert world war during the Cuban Missile Crisis, finally...

The Crouching Dragon

By Leonard Lamensdorf

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Gino, the countess & Chagall

By Leonard Lamensdorf

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The Raging Dragon (Will to Conquer Series, Book 2)

By Len Lamensdorf, Leonard Lamensdorf

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During Algeria's quest for independence from France in the 1960s, fifteen-year-old Willi and his friend, Louise, move to Paris where, with the help of second-generation members of the French Resist...

Ballad of Billy Lee

By Len Lamensdorf

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The Mexican gardener

By Leonard Lamensdorf

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Murdered Messiah

By Len Lamensdorf, Mark Jacobsen

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Murdered Messiah

By Len Lamensdorf, Mark Jacobsen

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Murdered Messiah

By Len Lamensdorf, Mark Jacobsen

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Murdered Messiah

By Len Lamensdorf, Mark Jacobsen

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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.