Robert Edward Duncan Books

A Selected Prose represents the most wide-ranging collection to date of Robert Duncan's essays and talks and is a companion volume to the Selected Poems (1993). Editor Robert J. Bertholf has taken...

Selected poems

By Robert Edward Duncan

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Duncan, like Dante, was a poet of cosmic imagination, intensely aware of his and poetry's role in the ever-expanding logos of creation. His Selected Poems, first published in 1993, is a "useful and...

Roots and Branches

By Robert Edward Duncan

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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.