David Clarke Books

OCR A2 Psychology Student Unit Guide: Unit G544 Approaches and Research Methods in Psychology: Guide to Approaches and Research Methods in Psychology

By David Clarke

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Pro-social and anti-social behaviour

By David Clarke

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Pro-Social and Anti-Social Behaviour

By David Clarke

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Microcomputer programs for groundwater studies

By David Clarke

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Groundwater Discharge Tests

By D. Clarke, David Clarke

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When a rude telemarketer calls while Honey Santana and her son are having dinner she decides to teach him a lesson in good behavior. She lures him and his mistress with a pitch for Florida real est...

The Angel of Mons: Phantom Soldiers and Ghostly Guardians

By David Clarke

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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.