Perry Janet Books

Discusses dragons as they have appeared in the beliefs and legends of various cultures, including ancient Babylon and Egypt, Europe, and Asia, as well as how they are reflected in real creatures su...

Manmade monsters

By Perry Janet

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Examines monsters fashioned from organic or robotic parts, both in literature and movies, including Frankenstein and the computer HAL from "2001: A Space Odyssey."

Aliens

By Perry Janet

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Describes how alien monsters have been imagined in books and movies and examines real creatures in nature that resemble or may have served as inspiration for them.

Monsters of the deep

By Perry Janet

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Discusses some of the large and frightening creatures that live, or are believed to have lived, in the world's oceans.

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.