Helen Lanz Books

Go green

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Considers how food reaches our table and looks at how careful shopping and planning can really cut down the amount of waste. Suggested level: primary, intermediate.

Grow your own tomatoes

By Helen Lanz

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Step-by-step instructions for growing your own tomatoes in containers or in the garden.

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.

Helen Lanz Books

Wonderful Water

Having The Energy

Reduce Reuse Recycle

Go green

How Shall We Travel

Shopping Choices

Lettuce

Potatoes

Tomatoes

Grow your own tomatoes

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?