Harry Kondoleon Books

Diary of a lost boy

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Part screwball comedy, part (screwball) tragedy - a brilliantly original novel about love and marriage, gay and straight, in the age of AIDS. At the center, Hector Diaz - seen everywhere around New...

Out Front

By Harry Kondoleon, William M. Hoffman, Holly Hughes, Martin Sherman, Terrence McNally, Harvey Fierstein, Robert Chesley, Emily Mann, Evan Smith

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Slack and Tops.

By Harry Kondoleon

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Saved or destroyed

By Harry Kondoleon

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The Vampires.

By Harry Kondoleon

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Zero Positive.

By Harry Kondoleon

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Play Yourself

By Harry Kondoleon

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The Houseguests.

By Harry Kondoleon

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Love Diatribe.

By Harry Kondoleon

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Anteroom.

By Harry Kondoleon

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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.