Jack Hoffman Books

Run run run

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An intimate portrait of one of the most fascinating and complex history-makers of our century, Run Run Run intertwines the details of Abbie Hoffman's intense personal life, as told by his brother,...

Run Run Run

By Daniel Simon, Jack Hoffman

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An intimate portrait of one of the most fascinating and complex history-makers of our century as shown in the new film "The Trial of the Chicago 7" (played by Sacha Baron-Cohen)Intertwining the det...

Motivational Quotes

By Jack Hoffman

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Run Run Run

By Jack Hoffman

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Intertwining the details of Abbie Hoffman's intense personal life with the movement politics of the sixties, seventies, and eighties, Dan Simon writes Abbie's story from the point of view of his yo...

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.