Holly L. Niner Books

I can't stop!

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A boy is diagnosed with Tourette syndrome and learns about constructive ways he can manage his condition. Includes nonfiction information from a physician.

Mr. Worry

By Holly L. Niner

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Eight-year-old Kevin is frustrated by his need to check things and repeat actions over and over until a counselor diagnoses obsessive-compulsive disorder (OCD) and teaches him ways to manage this c...

No More Noisy Nights

By Holly L. Niner

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Mr. Worry

By Holly L. Niner

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Zeka Oyunlari 3

By Holly L. Niner

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Elimde Degil

By Holly L. Niner

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Mr. Worry

By Holly L. Niner

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I Can t Stop

By Holly L. Niner

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Mr. Worry

By Holly L. Niner

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Mr. Worry

By Holly L. Niner

Average: 0.00, 0 Ratings

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.