Friends And Associates Books

Picassos Dichterfreund

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An inside account by the youngest member of Charles Manson's cult describes her indoctrination at age fourteen and the manipulation, psychological control, and physical abuse that she endured befor...

Gluckliches Ereigniss

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Rendezvous bei August Macke

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In memoriam Dr. Kurt Petermann

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Zwischen Gewalt und Widerstand

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Hans Werner Henze Ingeborg Bachmann

By Peter Petersen

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Bach Friends

By Jorg Hansen

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Adolf Erbsloh

By Adolf Erbsloh

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Familiar spirits

By Alison Lurie

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"James Merrill and his longtime partner David Jackson were brilliant, rich, charming, generous, and sophisticated, and Merrill was a world-famous poet, known for the autobiographical element in his...

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.