Catherine M Andronik Books

Hatshepsut, his majesty, herself

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A picture book biography of Hatshepsut, a queen in ancient Egypt who declared herself king and ruled as such for more than twenty years.

Copernicus: Founder Of Modern Astronomy

By Catherine M Andronik, Catherine M. Andronik

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The idea of Earth circling the sun is universally accepted today, but this was not always the case. Centuries ago, it was widely believed that the earth stood still and the sun moved. Many years be...

Copernicus

By Catherine M Andronik

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School library management.

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Elton John and Bernie Taupin

By Catherine Andronik

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Antarctica and the arctic circle

By Andrew J. Hund

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"This one-stop reference is a perfect resource for anyone interested in the North and South Poles, whether their interest relates to history, wildlife, or the geography of these regions in the news...

School library management notebook.

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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.