Jackie Gaff Books

Sea Creatures Extraordinary

By Robin Wasserman

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Alberto Giacometti

By Alberto Giacometti, Jackie Gaff

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Discusses the life, art, and legacy of the artist Alberto Giacometti. Includes a timeline linking the events in his life with world events.

Buildings bridges tunnels

By Jackie Gaff

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An explanation of how various types of buildings, tunnels, and bridges are built.

I Wonder Why Horses Wear Shoes

By Jackie Gaff

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I Wonder Why Mountains Have Snow on Top I Wonder Why

By Jackie Gaff

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I Wonder Why Fish Grew Legs and Other Questions about Prehistoric Life I Wonder Why

By Jackie Gaff

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Alberto Giacometti Artists in Their Time

By Jackie Gaff

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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.