Carol Willis Books

Building the Empire State

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Building the Empire State celebrates the monumental achievement of the design and construction of the world's most famous skyscraper. The construction was orchestrated by the general contractors S...

New York Architecture

By Carol Willis, Amanda Johnson, Richard Berenholtz

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Skyscraper Rivals

By Daniel M. Abramson, Carol Willis

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Although fundamental factors of program, technology, and economics make tall buildings everywhere take similar forms, skyscrapers in New York and Chicago developed very differently in the first hal...

Form follows Finance

By Carol Willis

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New York Deco

By Carol Willis Richard Berenholtz

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Building the Empire State

By Carol Willis

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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.