John R. Postgate Books

Nitrogen Fixation

By J.R. Postgate, John R. Postgate, John Raymond Postgate

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Living things, on this planet, continually recycle the chemical elements of which they are composed.

The Outer Reaches Of Life

By J.R. Postgate, Postgate, J. R., John R. Postgate

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Since the dawn of life on Earth, the world has been gradually transformed by living things into a comfortable home for plants, animals and ourselves. But many harsh and seemingly inhospitable place...

Mikroben Und Menschen: Die Unsichtbare Macht Der Bakterien Und Viren

By John Postgate, John R. Postgate

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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.