Paul Doherty Books

The Treason of the Ghosts

By P. C. Doherty

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The photographic atlas of the stars

By H. J. P. Arnold

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The Photographic Atlas of the Stars presents the whole of the night sky in 45 full-page colour photographs taken through a 35mm lens, so the field of view approximates to that of the naked eye. Eac...

Building an Astronomical Telescope

By P. C. Doherty

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The Caldwell Catalogue

By Patrick Moore

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The mask of Ra

By Paul Doherty

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The Godless Man

By P. C. Doherty

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The Gates of Hell

By P. C. Doherty

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Murder's immortal mask

By P. C. Doherty

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September 314AD and once more murder strikes the sprawling streets of imperial Rome. When two prostitutes are found viciously murdered, it is feared that the notorious killer Nefandus has returned....

Murder s immortal mask

By P. C. Doherty

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The spies of Sobeck

By P. C. Doherty

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Fresh from her victories over the Sea People in the north, Pharaoh Queen Hatusu has returned to Thebes to find sinister threats emerging from its neighbouring province, Nubia.A secret murderous sec...

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.