Masao Ōtake Books

Hinamatsuri Volume 15

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When Haru was sent back in time by his mysterious future government, he was given one order: Make Rockllusion a reality. Now that he's located and assembled all the relevant individuals, he's ready...

Hinamatsuri Volume 15

By Masao Ohtake

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Hinamatsuri Volume 18

By Masao Ohtake, Masao Ōtake

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Atsushi’ s hell-bent insistence on revolutionizing music as we know it, coupled with Hitomi’ s boundless professional success, is sending the entire nation of Japan hurtling...

Hinamatsuri Volume 2

By Masao Ohtake

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Hinamatsuri Volume 3

By Masao Ohtake

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Hinamatsuri Volume 4

By Stephen Kohler, Masao Ohtake

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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.