Trudy Harris Books

Wow it s a cow

By Trudy Harris

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Rhyming text identifies creatures which might be seen and heard while one is searching for a cow.

The One You Really Want

By Trudy Harris, Jill Mansell

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The Loudest Sneeze

By Trudy Harris, Jenny Feely

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100 days of school

By Trudy Harris

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A series of rhymes illustrates different ways to count to 100 such as by adding the ten toes of ten children or ninety-nine train cars plus one caboose.

Pattern Fish

By Trudy Harris

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Illustrations and rhyming text describe various patterns depicted by different fish. Includes related activities.

Over, under, in, and ouch!

By Trudy Harris

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Rhyming advice about some silly problems introduces the use of prepositions.

Over Under in and Ouch Silly Millies

By Trudy Harris, Steve Haskamp

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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.