Otto Zwierlein Books

Seneca Tragoediae

By Seneca The Younger

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Petrus in Rom die literarischen Zeugnisse

By Otto Zwierlein

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Petrus und Paulus in Jerusalem und Rom

By Otto Zwierlein

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"In studying the debate between Peter and Paul and the resulting primacy on the Latin Church, Otto Zwierlein defends the arguments of Petrus in Rom (Untersuchungen zur antiken Literatur und Geschic...

Die Urfassungen der Martyria Polycarpi et Pionii und das Corpus Polycarpianum

By Otto Zwierlein

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Lucubrationes Philologae Volume 1

By Otto Zwierlein

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Lucubrationes Philologae Volume 2

By Otto Zwierlein

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Lucubrationes Philologae

By Otto Zwierlein

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Die Ovid Und Vergil Revision in Tiberischer Zeit

By Otto Zwierlein

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Die antiharetischen Evangelienprologe und die Entstehung des Neuen Testaments

By Otto Zwierlein

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Hippolytos und Phaidra

By Otto Zwierlein

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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.