Nancy Plain Books

The man who painted Indians

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A biography of the painter, author, and ethnographer who devoted himself to recording Indian life, not only in this country but in South America and Asia.

Leonardo da Vinci

By Nancy Plain

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A biography of the versatile Renaissance artist, describing his many achievements in painting, architecture, engineering, sculpture, and science.

Eleanor of Aquitaine and the High Middle Ages

By Nancy Plain

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Chief Joseph's Band of Nez Perce Indians lived in Oregon's green and beautiful Wallowa Valley. His people loved their ancient home; they were grateful for their land and everything that lived on it...

This strange wilderness

By Nancy Plain

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Describes how the writer and naturalist set about recording in both word and image the birds of North America, and details the legacy his work has left behind.

This Strange Wilderness

By Nancy Plain

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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.