Wilfrid Lay Books

The Child'S Unconscious Mind: The Relations Of Psychoanalysis To Education

By Lay, Wilfrid, Wilfrid, Wilfrid Lay, Wilfrid , 1872- Lay

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First published in 1999. This is Volume XIV of thirty-two in the Developmental Psychology series. Written in 1919, this book tests the hypothesis that the unconscious portion of each human mind, ch...

International Library Of Psychology: Man'S Unconscious Passion

By Wilfrid Lay, Wilfrid LAY, Lay Wilfrid

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Man'S Unconscious Passion And Man'S Unconscious Spirit

By Wilfrid Lay

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The Child'S Unconscious Mind: The Relations Of Psychoanalysis To Education, A Book For Teachers And Parents

By Wilfrid Lay

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Man'S Unconscious Conflict

By Wilfrid Lay

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Man'S Unconscious Passion

By Wilfrid Lay

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The Unconscious As An Urge

By Wilfrid Lay

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Unconscious Emotions And Will

By Wilfrid Lay

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Belief Before Knowledge

By Wilfrid Lay

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Man'S Unconscious Spirit

By Wilfrid Lay

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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.