Robert Kraus Books

Tony the tow truck

By Robert Kraus

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When Tony the Tow Truck gets stuck, none of the cars will stop to help until friend Bumpy comes along. On board pages.

The Practice of echocardiography

By Robert Kraus

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Milton the early riser.

By Robert Kraus

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The first one to awake, Milton the Panda tries hard to wake all the other animals but to no avail.

The tree that stayed up until next Christmas

By Robert Kraus

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Three toy friends decide to leave their Christmas tree up for Valentine's Day--and the next holiday, and the next--until suddenly it's Christmas again!

Herman the helper.

By Robert Kraus

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Herman the helpful octopus is always willing to assist anyone who needs his help--old or young, friend or enemy.

Good night, little one

By Robert Kraus

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From every corner of the room children appear one-by-one until there are ten asleep in the bed.

Good night, little A. B. C

By Robert Kraus

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Various animals, each of whose names begins with a different letter of the alphabet, get ready for bed.

Good night, Richard Rabbit

By Robert Kraus

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A little rabbit finds many excuses to delay going to sleep.

Poor Mister Splinterfitz!

By Robert Kraus

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No matter where he sits--and he tries some unlikely places--poor Mister Splinterfitz gets a splinter.

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.