Hoffman Joan Books

Directory of adult education organisations in and near Johannesburg.

By Hoffman Joan

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Spelling Puzzles

By Joan Hoffman, Janice Fried, Hoffman Joan

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Peter s dream

By Hoffman Joan

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Peter has a dream that takes him across the sea.

Basics preschool

By Hoffman Joan

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Used as a reinforcement to a child's school work or to introduce new skills. Focuses on alphabet, classifying, beginning sounds, and numbers.

Kindergarten Basics Super Deluxe

By Hoffman Joan

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The cooperation challenge of economics and the protection of water supplies

By Hoffman Joan

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Cooperation Challenge of Economics and the Protection of Water Supplies

By Hoffman Joan

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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.