Adrian Lewis Books

A Bird Atlas of Europe

By Adrian Lewis, Dereck Pomeroy

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Convexity Optimization Functional Analysis

By Adrian Lewis, Borwein, Jonathan M. Borwein

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Raising venture capital for small and medium-sized enterprises

By Adrian Lewis

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A guide to handling bereavement the easyway

By Adrian Lewis

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A guide to handling bereavement the easy way

By Adrian Lewis

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This latest book in the Easyway Guides series, Handling Bereavement, Revised Edition, deals with the practical arrangements necessary after a death. The book is factual yet sympathetic and is inten...

Roger Hilton

By Adrian Lewis

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The Last Days of Hilton

By Adrian Lewis

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The drawings of Roger Hilton

By Adrian Lewis

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Abstract painter Roger Hilton (1911-75) is generally considered the best British post-war abstract expressionist. This book - the outcome of over four decades of research - focuses on his drawings...

A bird atlas of Kenya

By Adrian Lewis

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Wellness ConneXion

By Adrian Lewis, Dan M.D. Watts, Steve J. D. Kalishman

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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.