Robert Kraus Books

The pictures in this book show scenes from different towns, with many things to find and count in each scene. There are 1001 things to count altogether.

Leo el retono tardio

By Robert Kraus

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What's the matter with Leo?" his father asks, when Leo can't read, write, draw, eat neatly or speak. "He's just a late bloomer", explains his mother. And sure enough, one day in his own good time,...

Another Mouse to Feed Trumpet Club special ed.

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Freddy, the fire engine

By Robert Kraus

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Freddy responds to the fire alarm and rushes to save a little blue house. On board pages.

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.