Robert J. Bertholf Books

Robert Duncan and Denise Levertov

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Groundwork

By Robert Edward Duncan, Robert Duncan

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The Letters of Robert Duncan and Denise Levertov

By Robert Edward Duncan, Albert Gelpi, Robert Bertholf

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The Letters Of Robert Duncan And Denise Levertov

By Robert Bertholf, Robert Duncan, Albert Gelpi, Robert J. Bertholf, Robert Bertholf, Albert Gelpi, Robert Edward Duncan

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This Volume Presents The Complete Correspondence Between Two Of The Most Important And Influential American Poets Of The Postwar Period. The Almost 500 Letters Range Widely Over The Poerty Scene An...

Robert Duncan

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An Open Map

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Willam Blake and the moderns

By Robert J. Bertholf

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William Blake and the moderns

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From This Condensery

By Robert J. Bertholf, Lorine Niedecker

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Jess, a grand collage, 1951-1993

By Michael Auping

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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.