Takashi Kojima Books

Japanese Abacus

By Takashi Kojima

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Written on Water

By Takashi Kojima

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Despair and hope are two emotions commonly voiced by poets in the Man'yoshu, the oldest and most important collection of Japanese poetry. Although written over thirteen hundred years ago, the poems...

Rashomon and Other Stories

By Ryunosuke Akutagawa

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Advanced Abacus

By Takeshi Kojima, Takashi Kojima

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Kindai nihonga ubugoe no toki

By Takashi Kojima

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Suki no kakumei

By Takashi Kojima

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Japanese Abacus Small

By Takashi Kojima

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Japanese Abacus Medium

By Takashi Kojima

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Japanese Abacus Large

By Takashi Kojima

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Advanced Abacus

By Takashi Kojima

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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.