Walter S. Judd Books

Flora of Middle Earth

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"Few settings in literature are as widely known or celebrated as J.R.R. Tolkien's Middle-Earth. The natural landscape plays a major role in nearly all of Tolkien's major works, and readers have com...

Plant Systematics

By Peter F. Stevens, Elizabeth A. Kellogg, Michael J. Donoghue, Christopher S. Campbell

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Plant Systematics

By Peter F. Stevens, Elizabeth A. Kellogg, Christopher S. Campbell

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Plant Systematics

By Peter F. Stevens, Elizabeth A. Kellogg, Walter S. Judd, Michael J. Donoghue, Christopher S. Campbell

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Revision of Miconia Sect. Chaenopleura Miconieae Melastomataceae in the Greater Antilles

By Walter S. Judd

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Plant Systematics

By Elizabeth A. Kellogg, Walter S. Judd, Michael J. Donoghue, Christopher S. Campbell, Peter F. Stevens

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Photo Gallery of Vascular Plants

By Daniel L. Nickrent, Kenneth R. Robertson, J. Richard Abbott, Walter S. Judd, Barbara S. Carlsward

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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.