Patrick Hoffman Books

The white van

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A drug hustler who is set up for robbery while trying to escape her desperate life and an alcoholic cop seeking to claim the money she is accused of stealing confront Russian drug dealers, Chinese...

The White Van

By Patrick Hoffman

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Every man a menace

By Hoffman Patrick Private Investigator

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"San Francisco is about to receive the biggest delivery of MDMA to hit the West Coast in years. Raymond Gaspar, just out of prison, is sent to the city to check in on the increasingly erratic deale...

Clean Hands

By Patrick Hoffman

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Clean Hands Lib E

By Patrick Hoffman, Christina Delaine

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Clean Hands

By Patrick Hoffman, Christina Delaine

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Every Man a Menace

By Patrick Hoffman

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Clean Hands

By Patrick Hoffman

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Clean Hands

By Patrick Hoffman

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White Van

By Patrick Hoffman

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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.