Stephanie Hoffman Books

Fossils
Fossils

By Steven M. Hoffman

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Learn how fossils to about the past.

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Rocks and Soil
Rocks and Soil

By Steven M Hoffman

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Rock study
Rock study

By Steven M. Hoffman

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Offers tips on how to identify rocks and background information on how rocks form.

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King a Hunter and a Golden Goose
Sharp Teeth Flat Teeth
Sharp Teeth Flat Teeth

By Stephanie Hoffman

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Sharp Teeth Flat Teeth
Sharp Teeth Flat Teeth

By Stephanie Hoffman

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Volcanoes and earthquakes
Gems, crystals, and precious rocks
Sharp Teeth Flat Teeth
Sharp Teeth Flat Teeth

By Stephanie Hoffman

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Sharp Teeth Flat Teeth
Sharp Teeth Flat Teeth

By Stephanie Hoffman

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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.

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