Lewis C. Mainzer Books

Cain'S Punishment

By Lewis C. Mainzer, Lewis C, Mainzer

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Two Wives Ago: Selected Poems

By Lewis C. Mainzer, Lewis Mainzer

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A Rollicking Old-Age Song: New Poems

By Lewis C. Mainzer

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A Rollicking Old-Age Song: New Poems

By Lewis C. Mainzer

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A Rollicking Old-Age Song: New Poems

By Lewis C. Mainzer

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This Collection, Written Since Two Wives Ago: Selected Poems, Includes Poems On Isaac And Strong-willed Abraham, King Lear And His Troublesome Daughters, The Mysteries Of Choir Practice, The Histor...

Cain'S Punishment

By Lewis C. Mainzer

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These poems reflect on Cains punishment for killing Abel, mischief that Jane Austens Elizabeth still causes, three swimmers striving to cross Puffers Pond, Albert Einsteins barbershop visit, a murd...

Cain'S Punishment : Poems

By Lewis C. Mainzer

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West Cemetery, Amherst : Poems

By Lewis C. Mainzer

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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.