SANDRA POSTEL Books

Saving the Planet: How to Shape an Environmentally Substainable Global Economy

By Lester R. Brown, Sandra Postel, Christopher Flavin, Lester Russell Brown

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State of the world

By Sandra Postel, Christopher Flavin, Lester Russell Brown, Linda Starke

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Saving the Planet: How to Shape an Environmentally Sustainable Global Economy

By Lester R. Brown, Sandra Postel, Christopher Flavin, Lester Russell Brown

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Nature's Services brings together world-renowned scientists from a variety of disciplines to examine the character and value of ecosystem services, the damage that has been done to them, and the co...

Nature s Services

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State of the world 1991

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Saving the planet

By Lester Russell Brown

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State of the World 2001

By Lester Russell Brown

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Last Oasis

By Sandra Postel

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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.