Pritchard Michael Books

Directory of London photographers 1841-1908

By Pritchard Michael

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A directory of London photographers, 1841-1908

By Pritchard Michael

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A history of photography in 50 cameras

By Pritchard Michael

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A History of Photography in Fifty Cameras explores the 180-year story of perhaps the most widely used device ever built. It covers cameras in all forms, revealing the origins and development of eac...

Tranter's terrain

By Pritchard Michael

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A history of photography in fifty cameras

By Pritchard Michael

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A history of photography in fifty cameras

By Pritchard Michael

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A history of photography in 50 cameras

By Pritchard Michael

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Photography was invented in 1839 and changed the way the people saw the world around them. The groundbreaking tool that brought the chemistry and optics together to make photography possible was th...

A history of photography in 50 cameras

By Pritchard Michael

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Sir Hubert von Herkomer and his film-making in Bushey, 1912-1914

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The Cyril Permutt Collection of cameras, optical toys and related material

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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.