Marc Wittmann Books

Altered States of Consciousness

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A groundbreaking study of what altered states of consciousness—the dissolution of feelings of time and self—can tell us about the mystery of consciousness, perfect for readers interested in psyched...

Felt Time

By Marc Wittmann

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An expert explores the riddle of subjective time, from why time speeds up as we grow older to the connection between time and consciousness.We have widely varying perceptions of time. Children have...

Altered States of Consciousness

By Graham Rowat, Marc Wittmann

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Felt Time

By Graham Rowat, Marc Wittmann

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Die GeWinner Diat. Der ultimative Weg zur Traumfigur.

By Michael Gerner, Marc Wittmann

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Der GeWinner Weg zur Traumfigur.

By Michael Gerner, Frank Will, Marc Wittmann

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Hissedilen Zaman Zamani Nasil Deneyimleriz

By Marc Wittmann

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Altered States of Consciousness

By Philippa Hurd, Marc Wittmann

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Altered States of Consciousness

By Philippa Hurd, Marc Wittmann

Average: 0.00, 0 Ratings

Altered States of Consciousness

By Philippa Hurd, Marc Wittmann

Average: 0.00, 0 Ratings

What can altered states of consciousness—the dissolution of feelings of time and self—tell us about the mystery of consciousness? A groundbreaking study of out-of-body-experiences, drug intoxicat...

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.