Nicholas Holtam Books

Grasping the heel of heaven

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Grasping the Heel of Heaven honours the immense legacy to the church of Michael Perham. A skilled and imaginative liturgist, a passionate advocate of women's ministry, an inspirational dean and bis...

The art of worship

By Nicholas Holtam

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Paintings from the National Gallery, London, many illustrating Christian themes and familiar biblical stories, are presented alongside selected prayers, poems and quotations to encourage private pr...

Room with a View

By Holtam

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Sleepers Wake Getting Serious about Climate Change

By Nicholas Holtam

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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.