Elizabeth Marcus Books

Rocks & minerals

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Questions and answers provide basic information about rocks and minerals, including their formation, properties, and identification.

Rocks & minerals

By Elizabeth Marcus

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Questions and answers provide basic information about rocks and minerals, including their formation, properties, and identification.

Our wonderful seasons

By Elizabeth Marcus

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Answers questions about the seasonal changes produced by variations in the angle at which the sun's rays strike the earth.

Our wonderful seasons

By Elizabeth Marcus

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Answers questions about the seasonal changes produced by variations in the angle at which the sun's rays strike the earth.

All about mountains & volcanoes

By Elizabeth Marcus

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Answers questions about the development of mountains and volcanoes and about their influence on the world's ecosystem and on human life.

All about Mountains and Volcanoes Question Answer Books Troll

By Elizabeth Marcus

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QUIERO CONOCER ROCAS Y MINERALES

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Montanas y volcanes

By Elizabeth Marcus

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Answers questions about the development of mountains and volcanoes and about their influence on the world's ecosystem and on human life.

Don t Say a Word

By Elizabeth Marcus

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Amazing world of plants

By Elizabeth Marcus

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Answers questions about the different kinds of plants, their growth and reproduction, and the ways they are beneficial to mankind.

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.