William Harmon Books

The Classic Hundred

By William Harmon

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The Classic Hundred Poems

By William Harmon

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Here in one volume are the top one hundred poems, as determined by a survey of more than 1,000 anthologies - the poems in English most frequently anthologized, the poems with the broadest, most end...

The Classic Hundred Poems

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The Columbia Granger's(R) World of Poetry on CD-ROM 3.0: For Windows and Macintosh operating systems

By William Harmon

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The Columbia Granger's World of Poetry on Cd-Rom 3.0

By William Harmon

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Columbia Grangers World of Poetry

By Columbia

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Columbia Granger's World of Poetry on CD Rom 3.0 for 9 or More Users

By Columbia

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Classic writings on poetry

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One long poem

By William Harmon

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One long poem

By William Harmon

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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.