Cliff W. Emmens Books

A step-by-step book about setting up a marine aquarium

By C. W. Emmens

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Exotic marine fishes

By Herbert R. Axelrod

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Marine fishes and invertebrates in your own home

By C. W. Emmens

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A Step By Step Book about Tropical Fish

By Cliff W. Emmens

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A step by step book about setting up an aquarium

By C. W. Emmens

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Explains how to set up a freshwater aquarium, discussing the different types of equipment, water quality, fish behavior, plant needs, purification techniques, and the availability of many fish spec...

Exotic Marine Fish

By Herbert R. Axelrod, Cliff W. Emmens

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Tropical Fish

By Cliff W. Emmens

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Peces Tropicales

By Cliff W. Emmens

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Acuario de Agua Dulce El

By Cliff W. Emmens

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Marine Aquarium in Theory and Practice Revised

By Cliff W. Emmens

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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.