Helen Lefkowitz Horowitz Books

Rereading Sex

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From bawdy talk to evangelical sermons, and from celebrations of free love to prosecutions for obscenity, nineteenth-century America encompassed a far broader range of sexual attitudes and ideas th...

Alma mater

By Helen Lefkowitz Horowitz

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Campus life

By Helen Lefkowitz Horowitz

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The Power and Passion of M. Carey Thomas

By Helen Lefkowitz Horowitz

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M. Carey Thomas (1857-1935) was an extraordinary woman whose career spanned the Victorian and modern worlds. Her story is superbly told in a biography that resonates with the complicated interplay...

Culture & the city

By Helen Lefkowitz Horowitz

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Alma mater

By Helen Lefkowitz Horowitz

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Alma mater

By Helen Lefkowitz Horowitz

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Attitudes Toward Sex in Antebellum America

By Helen Lefkowitz Horowitz

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Era of Franklin D. Roosevelt 1933 1945 US War With Mexico Attitudes Toward Sex in Antebellum America Black Americans in the Revolutionary Era ... Lincoln Slavery and the Civil War 2e

By Ernesto Chavez, Helen Lefkowitz Horowitz, Woody Holton, Michael P. Johnson, Michael Kammen, Elizabeth Trapnell Rawlings, Richard Polenberg, Thomas S. Kidd, Alexis De Tocqueville

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Campus Life

By Helen Lefkowitz Horowitz

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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.