Gertrude Chandler Warner Books

Blue Bay Mystery

By Gertrude Chandler Warner

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The Boxcar Children 5

By Gertrude Chandler Warner

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Mystery Ranch

By Gertrude Chandler Warner

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The Boxcar Children, now living with their grandfather, spend the summer on their Aunt Jane's ranch. Their aunt seems quite unhappy until at the end of the summer a surprise discovery brings happin...

The Yellow House Mystery

By Gertrude Chandler Warner, Gertrude Warner

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Relates the exploits of the four Alden children as they locate a missing man

Surprise Island

By Gertrude Chandler Warner

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The Boxcar Children

By Gertrude Chandler Warner

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One warm night four children stood in front of a bakery. no one knew them. No one knew where they had come from. Henry, Jessie, Violet, and Benny are orphans. Determined to make it on their own,...

The Woodshed Mystery

By Gertrude Chandler Warner

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The Boxcar children become involved in a mystery going back to Revolutionary War days.

The Boxcar Children Innovations Experiencing Literature in the Classroom

By Gertrude Chandler Warner

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The deserted library mystery

By Gertrude Chandler Warner

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The mystery of the hidden painting

By Gertrude Chandler Warner

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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.