Opera Books

Selam Opera
Selam Opera

By Asfa Wossen Asserate

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Die Oper ist das Reich des Scheins
Operntheater in der DDR
Operntheater in der DDR

By Eckart Kroplin

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In der DDR lernte das Theaterpublikum schnell, zwischen den Zeilen zu lesen und Zwischentöne zu hören--so wie es der Dramatiker Heiner Müller in seinem Libretto zur Oper "Lanzelot" von Paul Dessau...

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Mozart, Don Giovanni
Mozart, Don Giovanni

By Clemens Prokop

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Verdi, Aida
Verdi, Aida

By Detlef Giese

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Beethoven, Fidelio
Beethoven, Fidelio

By Robert Maschka

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Puccini, Tosca
Puccini, Tosca

By Michael Horst

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Mozart - Cosi fan tutte
Mozart - Cosi fan tutte

By Malte Krasting

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Bizet, Carmen
Bizet, Carmen

By Wolfgang Fuhrmann

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Strauss Salome
Strauss Salome

By Ann Christine Mecke

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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.

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