Immo Appenzeller Books

Reports on Astronomy

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IAU Transactions are published as a volume corresponding to each General Assembly. Volume A is produced prior to the Assembly and contains Reports on Astronomy, prepared by each Commission Presiden...

Transactions of the International Astronomical Union

By Immo Appenzeller

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Introduction to astronomical spectroscopy

By I. Appenzeller

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"The book introduces graduate students and young researchers of astronomy and physics to the techniques and methods of astronomical spectroscopy. It covers spectroscopic methods in all branches of...

Introduction to astronomical spectroscopy

By I. Appenzeller

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"The book introduces graduate students and young researchers of astronomy and physics to the techniques and methods of astronomical spectroscopy. It covers spectroscopic methods in all branches of...

Introduction to Astronomical Spectroscopy

By Immo Appenzeller

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Introduction to Astronomical Spectroscopy

By Immo Appenzeller

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Introduction to Astronomical Spectroscopy

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Evolution of Galaxies Astronomical Observations

By Immo Appenzeller, Harm J. Habing, Pierre Lena

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High Redshift Galaxies

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Transactions of the International Astronomical Union Vol. XXIIB

By Immo Appenzeller

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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.