Harry Callahan Books

Harry Callahan

By John Szarkowski, Sarah Greenough

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Harry Callahan

By Julian Cox, Emmet Gowin, Harry M. Callahan

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Harry Callahan

By Harry M. Callahan

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"Harry Callahan (1912-1999) is regarded as one of the most innovative and influential 20th-century American photographers. By amplifying the abstract tendencies of New Vision in a lyrical mode evin...

Harry Callahan Aperture Masters of Photography

By Harry Callahan, Harry M. Callahan

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Landscape, theory.

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Photographs, essays, and edited transcripts of taped interviews with the artists.

Callahan in New England

By Harry Callahan

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Harry Callahan

By Harry Callahan, John Pultz, Grant Arnold

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Harry Callahan

By Harry Callahan

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Morocco

By Harry Callahan

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Seven Collages

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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.