Philip Sayer Books

Milestones of science and technology

By Philip Sayer, Peter Morris, Lesley Henderson, James C. Hart

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Follows key the developments in science, technology, and medicine, from the Byzantine sundial-calendar (circa 520) to the prototype "Clock of the long now" (1999). In doing so, one can follow the c...

Stansted

By Richard Bryant, Philip Sayer, Ken Powell

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Making Victorian kinetic toys

By Philip Sayer

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Faces of Design

By Philip Sayer

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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.