Hannu Karttunen Books

Fundamental Astronomy

By Hannu Karttunen

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Astronomie

By Hannu Karttunen

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Fundamental Astronomy

By H. Karttunen, P. Kroger, H. Oja, M. Poutanen

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Fundamental Astronomy

By Pekka Kroger, Markku Poutanen, Hannu Karttunen, Heikki Oja

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This well balanced and comprehensive book can serve both as an introduction to astronomy and astrophysics for science majors and a reference for practicing astronomers, for whom it will provide the...

The Three Body Problem

By Mauri Valtonen, Hannu Karttunen

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Astronomie Eine Einfuhrung Springer Lehrbuch German Edition

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Fundamental astronomy.

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Fundamental astronomy

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Fundamental astronomy

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Fundamental astronomy

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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.