Tony Langham Books

Why Me Interviews with Seven People with AIDS

By Tony Langham, Margje Koster

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Meetings With Angels

By H. C. Moolenburgh

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Creepy crawly calypso

By Tony Langham

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Ten kinds of spiders and insects use a variety of instruments to make calypso music. Includes music, as well as notes about the insects and the instruments they play.

Teddy Tum Tum

By Tony Langham, Patrick Lowry, Gillian Breese

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Canal boat cat Animal World stories

By Tony Langham

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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.