Kathleen Gould Books

River Reader

By Kathleen Gould Christopher Gould

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In a class of her own

By Kathleen Gould Lundy

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"It is America in the year 1960. A six-year-old girl called Ruby Bridges makes history by being the first African-American child to attend an all-white school in New Orleans. What is she up against...

What Do I Do About the Kid Who...

By Kathleen Gould Lundy

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Writing Reading and Research

By Kathleen Gould, Christopher Gould, Richard Veit

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Oxford Reading Tree: Stage 14: TreeTops Graphic Novels: Pack of 6

By David Boyd Elisabeth Siegel Glen Downey Claire Kelly Kathleen Gould Aleksander Panev

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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.