Harold Roth Books

Babies love the playground

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Photographs and brief text describe playground activities such as playing on the jungle gym, in the sandbox, and on the merry-go-round. On board pages.

Babies love summer days

By Harold Roth

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Photographs and brief text describe summertime activities such as playing in a wading pool, visiting the beach, and eating watermelons. On board pages.

Babies love spring days

By Harold Roth

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Photographs and brief text describe springtime activities such as climbing trees, picking flowers, sailing boats, and riding tricycles. On board pages.

Babies Love Nursery Babies Love

By Harold Roth

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All around the town

By Harold Roth

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Flaps lift to reveal what's behind doors all over town--in a garage, at a construction site, and on the school bus.

Let's look all around the house

By Harold Roth

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By lifting flaps, the reader may see what's behind a variety of doors in a house.

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.