John O Brien Books

Dementia

By David Ames, Alistair Burns, John O Brien

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Modern Portfolio Theory

By John O Brien, Sanjay Srivastava

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Bond Valuation and Bond Tutor

By John O Brien, Sanjay Srivastava

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Starsky Hutch

By John O Brien, William Blinn, Todd Phillips, Scot Armstrong

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Set in the 1970s Bay City, two undercover police detective, Ken "Hutch" Hutchinson and Dave Starsky, always seem to get the toughest cases from their boss, Captain Dobey. They rely on their street...

Interviews with Black writers.

By John O Brien

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The construction of Pakistani Christian identity

By John O Brien

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Investments: a Visual Approach

By John O Brien, Sanjay Srivastava

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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.