Mercer Mayer Books

There's a Nightmare in my Cupboard

By Mercer Mayer

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A Boy, a Dog, a Frog, and a Friend

By Mercer Mayer, Marianna Mayer

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First came a boy and his dog.Then they found a frog.Can a new turtle be a good friend too?

A Boy, a Dog And a Frog

By Mercer Mayer

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Tells in pictures a boy's unsuccessful attempts to catch a frog.

Frog Goes to Dinner

By Mercer Mayer

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Having stowed away in a pocket, Frog wreaks havoc and creates disgrace for the family at the posh restaurant where they are having dinner.

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.