Katherine Hannigan Books

Ida B

By Katherine Hannigan

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Ida B: . . . and Her Plans to Maximize Fun, Avoid Disaster, and

By Katherine Hannigan

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In Wisconsin, fourth-grader Ida B spends happy hours being home-schooled and playing in her family's apple orchard, until her mother begins treatment for breast cancer and her parents must sell par...

Ida B: . . . and Her Plans to Maximize Fun, Avoid Disaster, and (Possibly) Save the World

By Katherine Hannigan

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Ida B: . . . and Her Plans to Maximize Fun, Avoid Disaster, and (Possibly) Save the World

By Katherine Hannigan

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Emmaline and the Bunny

By Katherine Hannigan

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Everyone and everything in the town of Neatasapin is tidy, except Emmaline who likes to dig dirt, jump in puddles, and wants to adopt an untidy bunny.

True

By Katherine Hannigan

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Ida B

By Alberto Jimenez Rioja, Katherine Hannigan

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Ida B. ...and Her Plans to Maximize Fun Avoid Disaster and Possibly Save the World

By Katherine Hannigan

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Ida B....and Her Plans to Maximize Fun Avoid Disaster and Possibly Save the World

By Katherine Hannigan

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Gwendolyn Grace

By Katherine Hannigan

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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.