Jonathan Vankin Books

A feverish feast of the most far-reaching, far-out, and startling conspiracy theories of all time, from the J.F.K. assassination and the Jack the Ripper slayings to the Manson family and the CIA.

The 80 greatest conspiracies of all time

By Jonathan Vankin

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The 70 Greatest Conspiracies Of All Time

By J. Vankin, Jonathan Vankin

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Tokyo days Bangkok nights

By Jonathan Vankin

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"The neon pulse of Asia. When Americans venture to the other side of the Earth, they might as well be on another planet. Tokyo days, Bangkok nights follows the exploits of young travelers lost on t...

The big book of the '70s

By Jonathan Vankin

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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.