Mark Shulman Books

Crazy Cool Outrageous TIME For Kids Book of WHY TIME for Kids Big Books of WHY

By The Editors Of TIME For Kids

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X why Z

By Mark Shulman

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Presents answers to a variety of scientific questions, including why teeth fall out, why school buses are yellow, and why some trees stay green all winter.

Time for kids x why z animals

By Mark Shulman

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Answers to so many questions about animals.

Time for kids X why Z space

By Mark Shulman

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Answers commonly asked questions about space and includes sections on the sun, the solar system, the stars, and space exploration.

X why Z

By Mark Shulman

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Introduces the body and answers common questions ranging from how people communicate and why people look different to why people burp and why people act the way they do.

X why Z?

By Mark Shulman

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Presents answers to a variety of scientific questions, including why teeth fall out, why school buses are yellow, and why some trees stay green all winter.

Dino in the Jungle

By Sarah Il Massini Mark Shulman

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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.