James G. Needham Books

Guide To The Study Of Freshwater Biology

By James G. Needham, J.G. Needham, Needham, James G. 1868-1957.

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This fifth edition of this guide has the same purpose which is to facilitate the recognition of fresh-water organisms both in the field and laboratory. The format remains the same as the earlier ed...

Culture Methods for Invertebrate Animals

By Paul S. Galtsoff, Frank E. Lutz, Paul L. Welch

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A Manual of the Dragonflies of North America Anisoptera Including the Greater Antilles and the Provinces of the Mexican Border

By James George Needham, Needham James G.

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Guide To The Study Of Freshwater Biology

By James G. Needham, James George Needham, Paul R. Needham, Needham, James G. 1868-1957.

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The biology of mayflies

By Needham James G.

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Dragonflies of North America

By Minter J. Jr. Westfall, James George Needham, Michael L. May

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Noctuidae

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Guia para el estudio de los seres vivos de las aguas dulces

By James George Needham

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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.