Darwin Porter Books

Inside Linda Lovelace s Deep Throat

By Darwin Porter

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Those glamorous Gabors

By Darwin Porter

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Zsa Zsa, Eva, and Magda Gabor transferred their glittery dreams and gold-digging ambitions from the twilight of the Austro-Hungarian Empire to Hollywood. There, more effectively than any army, thes...

Those Glamorous Gabors

By Darwin Porter

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Pink Triangle

By Danforth Prince, Darwin Porter

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Jacqueline Kennedy Onassis

By Darwin Porter

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Despite her unprecedented fame, most Americans know very few details about Jackie's emotional and romantic life in the aftermath of her marriages to and American president and subsequently to one o...

Jacqueline Kennedy Onassis

By Danforth Prince, Darwin Porter

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Love Triangle

By Danforth Prince, Darwin Porter

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Peter O Toole

By Danforth Prince, Darwin Porter

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Bill and Hillary

By Danforth Prince, Darwin Porter

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Donald Trump

By Danforth Prince, Darwin Porter

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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.