Robert Segal Books

Myths 4 Vol set Critical Concepts in Literary and Cultural Studies

By Robert Segal

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Psychology and Myth Theories of Myth

By Robert Segal

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Philosophy Religious Studies and Myth Theories of Myth

By Robert Segal

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Literary Criticism and Myth Theories of Myth

By Robert Segal

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The Allure of Gnosticism

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Gnosticism or Gnosis is far more than an ancient religious movement with Christian, Jewish, and pagan followers. It is a living presence today, in many religions and also completely outside formal...

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.