Teppo Jokinen Books

Erkki Huttunen liikelaitosten ja yhteisojen arkkitehtina 1928-1939

By Teppo Jokinen

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Arvorakennusten arkkitehti

By Teppo Jokinen

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Gustaf Nyström (1856-1917) was among the leading Finnish architects of his generation, and his work remains widely acclaimed to this day. The House of Estates, the National Archives, the old market...

Italiassa Saksanmaalla

By Teppo Jokinen, Hanne Selkokari

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Erkki Huttunen, 1901-1956, arkkitehti

By Teppo Jokinen

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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.