Robert J. Lang Books

Origami Under the Sea

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Twenty-six origami models of aquatic creatures: mollusks, crustaceans, frogs, fishes, and sea mammals. Includes brief biological information about each animal. Projects range in difficulty from sim...

Folding paper

By Meher McArthur

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A companion guide to the exhibition of the same name chronicles the evolution of the art of paper folding in both the East and West and explore the intersection of art and science in origami.

Folding paper

By Meher McArthur

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Origami Design Secrets

By Robert J. Lang

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Origami Sea Life

By Robert J. Lang, John Montroll

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Tomoko Fuse'S Origami Art

By Hideto Fuse, Tomoko Fuse, Robert J. Lang, David Brill, Robert Lang, Kengo Endo, Tsuyoshi Hongo

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Tomoko Fuse has been one of the world's premier origami artists for more than 35 years. This beautifully photographed book examines the three-dimensional geometric designs she is famous for. Fuse,...

Origami Design Secrets

By Robert J. Lang

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This book is an opus of world-famous origamist Robert J. Lang that presents the mathematical and design principles he uses to create original origami. The techniques are accompanied by folding inst...

Sea Creatures in Origami

By John Montroll

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This book present 24 figures range from intermediate to advanced.

Complete Book of Origami

By Robert J. Lang

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Origami Insects

By Robert J. Lang

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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.