Jim Holdaway Books

Modesty Blaise: The Gabriel Set-Up

By Peter O Donnell Illustrated By Jim Holdaway

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Modesty Blaise, cult creation of best-selling author Peter O’Donnell, is back! The London Evening Standard newspaper strip adventures of this all-round bad girl and spy are now collected in this st...

Modesty Blaise: Top Traitor

By Peter O Donnell Illustrated By Jim Holdaway

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Modesty Blaise: Mister Sun

By Peter O Donnell Illustrated By Jim Holdaway

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Modesty Blaise

By Jim Holdaway, O Donnell Peter

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Modesty Blaise Companion

By Jim Holdaway, Lawrence Blackmore, Pat Wright, Enrique Romero, John Burns

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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.