David Connolly Books

The Falstaff Principle

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The Falstaff Principle is a fast moving trans-national thriller which asks "When is discretion the better part of valour?" It questions many of the values we take for granted and gives a glimpse in...

In search of angels

By David Connolly

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Financial administration--parliamentary scrutiny: Parliamentary seminar, Canberra, 1 June 1979

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The towers of Ras al-Khaimah

By Derek Kennet

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Gifts in abeyance

By Nikephoros Vrettakos

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Halsbury s Laws of England Volume 48

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Halsbury s laws of England

By Hardinge Stanley Giffard Earl Of Halsbury

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Halsburys Laws V66 5thed

By Halsbury

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The Dedalus Book of Greek Fantasy Dedalus Literary Fantasy Anthologies

By David Connolly

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Lost in America

By David Connolly

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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.