Helen Trompeteler Books

Man Ray Portraits

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"The artist May Ray (1890-1976) initially taught himself photography in order to reproduce his own works of art, but it became one of his preferred mediums. As a contributor to the Dada and Surreal...

Audrey Hepburn

By Terence Pepper

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A rich collection of iconic and rare portraits of one of the world's most photographed women, international film legend Audrey Hepburn. During her lifetime, Belgian-born British actress Audrey Hepb...

Man Ray portraits

By Man Ray

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Man Ray

By Gosudarstvennyi Muzei Izobrazitelnykh Iskusstv Imeni A.S. Pushkina Staff, Terence Pepper, Man Ray, Scottish National Portrait Gallery Staff, National Portrait Gallery Great Britain Staff

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Audrey Hepburn Portraits of an Icon

By Terence Pepper, Helen Trompeteler

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Audrey Hepburn

By Terence Pepper, Helen Trompeteler

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Cutting Holes for Eyes

By Charlie Taylor, Makenzie O Connor, Nicole Czapinski, Helen Trompeteler, Centa Schumacher

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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.