William C. Tweed Books

Sequoia Kings Canyon

By William C. Tweed

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Sequoia and Kings Canyon

By William C. Tweed

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Death Valley and the Northern Mojave

By William C. Tweed

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King sequoia

By William C. Tweed

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"Ever since the giant sequoias of California's Calaveras Grove first captivated the American public, this towering, ancient tree species has provoked the imagination and motivated us to action on a...

Challenge of the Big Trees

By Lary M. Tweed William C. Dilsaver, Lary M. Dilsaver

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Challenge of the big trees

By Lary M. Dilsaver

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A place for wonder

By William C. Tweed

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Challenge of the big trees

By William C. Tweed

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Uncertain path

By William C. Tweed

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Uncertain Path

By William C. Tweed

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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.