Paul Ernest Sutton Whalley Books

A revision of the genus Canaea Walker (Lepidoptera, Thyrididae).

By Paul Ernest Sutton Whalley

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The Thyrididae (Lepidoptera) of Africa and its islands

By Paul Ernest Sutton Whalley

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Butterfly & moth

By Paul Ernest Sutton Whalley

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Photographs and text explore the behavior and life cycles of butterflies and moths, examining mating rituals, camouflage, habitat, growth from pupa to larva to adult, and other aspects.

Butterfly & moth

By Paul Ernest Sutton Whalley

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Photographs and text explore the behavior and life cycles of butterflies and moths, examining mating rituals, camouflage, habitat, growth from pupa to larva to adult, and other aspects.

Tropical leaf moths

By Paul Ernest Sutton Whalley

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Butterfly watching

By Paul Ernest Sutton Whalley

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Butterflies of Britain and Europe

By Paul Ernest Sutton Whalley

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Butterfly watching

By Paul Ernest Sutton Whalley

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Eyewitness

By Paul Ernest Sutton Whalley, Paul Whalley

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Photographs and text explore the behavior and life cycles of butterflies and moths, examining mating rituals, camouflage, habitat, growth from pupa to larva to adult, and other aspects.

The Mitchell Beazley pocket guide to butterflies

By Paul Ernest Sutton Whalley

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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.