Gwen Allen Books

Freshwater Animals
Freshwater Animals

By Joan Denslow, Gwen Allen

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Seashore Animals: (The Clue Books) :
Flowerless Plants
Flowerless Plants

By Joan Denslow, Gwen Allen

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Tracks and Signs
Tracks and Signs

By Joan Denslow, Gwen Allen

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Clue Books: Pack
Clue Books: Pack

By Joan Denslow, Gwen Allen

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Artists' Magazines
Artists' Magazines

By Gwen Allen

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How artists' magazines, in all their ephemerality, materiality, and temporary intensity, challenged mainstream art criticism and the gallery system.During the 1960s and 1970s, magazines became an i...

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Which and what?
Which and what?

By Gwen Allen

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Science in primary schools
Science in primary schools

By Gwen Allen

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The magazine
The magazine

By Gwen Allen

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"The multiple platforms of the digital era have not diminished the role of the magazine for artists as an alternative medium and experimental space. Whether printed on paper or electronically gener...

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William N. Copley

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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.

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