Douglas Florian Books

Discovering trees

By Douglas Florian

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An introduction to trees, their growth, reproduction, usefulness, and some specific kinds.

The city

By Douglas Florian

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A woman carrying a shopping bag passes all the sights of the city on the way to her apartment, then hangs on her wall the painting she has bought: a cityscape.

The city

By Douglas Florian

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A woman carrying a shopping bag passes all the sights of the city on the way to her apartment, then hangs on her wall the painting she has bought: a cityscape.

People working

By Douglas Florian

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Briefly describes where and how people work.

People working

By Douglas Florian

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Briefly describes where and how people work.

Airplane ride

By Douglas Florian

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A pilot and his small plane soar, loop, and cruise over cities, forests, deserts, and mountains, across the United States.

Airplane ride

By Douglas Florian

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A pilot and his small plane soar, loop, and cruise over cities, forests, deserts, and mountains, across the United States.

Turtle day

By Douglas Florian

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Turtle's adventures include sunning on a log, going for a swim, and being scared by a snake.

Turtle day

By Douglas Florian

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Turtle's adventures include sunning on a log, going for a swim, and being scared by a snake.

Mammalabilia Poems and Paintings

By Douglas Florian

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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.