Brian P. Cleary Books

The Action of Subtraction Math Is CATegorical R

By Brian P. Cleary

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How Long or How Wide A Measuring Guide Math Is CATegorical R

By Brian P. Cleary

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Lazily Crazily Just a Bit Nasally More about Adverbs Words Are CATegorical R

By Brian P. Cleary

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Under, over, by the clover

By Brian P. Cleary

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To root to toot to parachute

By Brian P. Cleary

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Rhyming text and illustrations of comical cats present numerous examples of verbs, from "toss and tumble," "jump and jam," to "whine and whisper," "sleep and slam."

Hairy Scary Ordinary

By Brian P. Cleary

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I and you and don't forget who

By Brian P. Cleary

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Rhyming text and illustrations of comical cats present numerous examples of pronouns and their functions, from "he" and "she" to "anyone", "neither", and "which."

Rainbow soup

By Brian P. Cleary

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An introduction to poetry that uses humorous poems, illustrations, and annotations to clarify terms and explain different types of poems, such as macaronic verse, concrete poems, and limericks.

Rainbow soup

By Brian P. Cleary

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An introduction to poetry that uses humorous poems, illustrations, and annotations to clarify terms and explain different types of poems, such as macaronic verse, concrete poems, and limericks.

Pitch And Throw Grasp And Know

By Brian P. Cleary

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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.