June K Singer Books

Seeing Through the Visible World: Jung, Gnosis and Chaos

By June Singer

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Androgyny

By June K Singer

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After thirteen printings and with nearly 100,000 copies in print since its publication twenty years ago, Boundaries Of The Soul has become recognized as THE classic introduction to Jung and the pra...

Gnostic Book of Hours: Keys to Inner Wisdom

By June Singer

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The Unholy Bible: A Psychological Interpretation of William Blake

By June Singer

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Boundaries of the Soul: Practice of Jung's Psychology

By June K Singer

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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.