Hannelore Ditz Books

Maria Lassnig Arnulf Rainer

By Hannelore Ditz, Hemma Schmutz, Brigitte Reutner

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The catalogue offers insights into Maria Lassnig's and Arnulf Rainer's early work in the years between 1945 and 1960. Having first met after the Second World War in Carinthia, the two artists trave...

Arnulf Rainer

By Arnulf Rainer

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Together with such artists as Jean Dubuffet, Antoni Tàpies, Asger Jorn and Karel Appel, Arnulf Rainer (b. 1929) gave new substance to European Expressionism in the latter half of the 20th century....

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.