Leon Carroll Books

Ghosts Of Honolulu

By Leon Carroll, Mark Harmon

Average: 0.00, 0 Ratings

Ghosts of Honolulu

By Mark Harmon, Leon Carroll

Average: 0.00, 0 Ratings

Ghosts Of Honolulu

By Leon Carroll, Mark Harmon

Average: 0.00, 0 Ratings

A U.S. naval counterintelligence officer working to safeguard Pearl Harbor; A Japanese spy ordered to Hawaii to gather information on the American fleet. On December 7, 1941, their hidden stories a...

Ghosts Of Honolulu: A Japanese Spy, A Japanese American Spy Hunter, And The Untold Story Of Pearl Harbor

By Leon Carroll, Mark Harmon

Average: 0.00, 0 Ratings

NEW YORK TIMES BESTSELLER "A fast-paced debut...Espionage buffs will savor this vibrant account." Publishers Weekly A U.S. naval counterintelligence officer working to safeguard Pearl Harbor; a...

Ghosts Of Panama

By Leon Carroll, Mark Harmon, Mark Harmon, Leon Carroll Jr

Average: 0.00, 0 Ratings

Panama, 1989. The once warm relationship between United States and Gen. Manuel Noriega has eroded dangerously. Newly elected President George Bush has declared the strongman a drug trafficker and...

Invictori Honorabilis

By Leon Carroll

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.