Christopher M. Graney Books

Setting Aside All Authority

By Christopher M. Graney

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Mathematical disquisitions

By Christopher M. Graney

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Johann Georg Locher wrote Disquisitiones Mathematicae (Mathematical Disquisitions) in 1614, about astronomy and the sun. Galileo replied, through Dialogue Concerning the Two Chief World Systems, Pt...

Mathematical disquisitions

By Christopher M. Graney

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Setting Aside All Authority

By Christopher M. Graney

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Setting aside all authority

By Christopher M. Graney

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"Setting Aside All Authority is an important account and analysis of seventeenth-century scientific arguments against the Copernican system. Christopher M. Graney challenges the long-standing ideas...

When Science Goes Wrong

By Guy Consolmagno, Christopher M. Graney

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Kepler s New Star

By William P. Blair, Matteo Cosci, Javier Luna, Miguel A. Granada Martinez, Christopher M. Graney

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DK Readers L1: The LEGO(R) NINJAGO(R) MOVIETM: Shark Attack!

By DK

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Prepare for Battle with Garmadon's shark army!Meet Lord Garmadon. He is the baddest villain in Ninjago City. Learn about his shark army and their wicked weapons and discover Garmadon's evil plans....

DK Readers L2: The LEGO(R) NINJAGO(R) MOVIETM: Secret Ninja Force

By DK

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Join the Secret Ninja Force on their adventures!Meet the members of the Secret Ninja Force. Learn how the train with Master Wu and how they keep Ninjago City safe. Discover what happens when they w...

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.