Klaus Ottmann Books

Social Strategies: Redefining Social Realism

By Klaus Ottmann

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Jennifer Bartlett: History of the Universe: Works 1970-2011

By Terrie Sultan, Klaus Ottmann, Jennifer Bartlett

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A critical and commercial success since the 1970s, Jennifer Bartlett (b. 1941) has become one of the most visionary and influential artists of our time. In the words of New York Times critic John R...

Karel Appel

By Klaus Ottmann

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The Essential Michelangelo

By Klaus Ottmann

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Michelangelo Essentials

By Klaus Ottmann

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The Essential Mark Rothko

By Klaus Ottmann

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Yves Klein

By Pierre Restany, Klaus Ottmann

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The Genius Decision

By Klaus Ottmann

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"The book suggests that while there is no essentialist quality of genius, the postmodern artist can reach the extraordinary by way of an active-passive Genius Decision, which is engaged in an activ...

David Deutsch

By Klaus Ottmann, David Deutsch

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Mary Kelly

By Klaus Ottmann

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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.