Reinhold Heller Books

"A representative volume featuring the masterpieces by Die Bruke, whose bold, expressive art heralded the birth of Expressionism in Germany." "The Brucke group was founded in 1905 by four students...

Art in Germany 1909 1936 From Expressionism to Resistance

By Reinhold Heller

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Vom Expressionismus zum Widerstand

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Edvard Munch the Frieze of Li

By Reinhold Heller

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Toulouse-Lautrec

By Reinhold Heller

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More than any other artist, Henri de Toulouse-Lautrec epitomizes the spirit of Montmartre, the most colorful and vibrant quarter of Paris. Physically disabled since childhood, he was unable to part...

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.