Mark Lehmstedt Books

Prolegomena zu Magnus Hirschfelds 'Jahrbuch fur sexuelle Zwischenstufen' (1899-1923): Register, Editionsgeschichte, Inhaltsbeschreibungen

By Jens Dobler, Mark Lehmstedt, Marita Keilson Lauritz, Theo Lamers

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Leipzig brennt. Der Untergang des alten Leipzig am 4. Dezember 1943 in Fotografien und Berichten

By Mark Lehmstedt

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Die geheime Geschichte der Digedags

By Mark Lehmstedt

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Leipzig in den zwanziger Jahren

By Mark Lehmstedt

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Buchtuten

By Mark Lehmstedt

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Innerhalb von zwei Jahrzehnten hat Mark Lehmstedt eine Sammlung von etwa 3000 Tüten, Taschen und Beuteln zusammengetragen, die in irgendeiner Weise der Welt Gutenbergs, dem gedruckten Buch, seinen...

B ucher fur das dritte Geschlecht: der Max-Spohr-Verlag in Leipzig Verlagsgeschichte und Bibliographie 1881 - 1941

By Mark Lehmstadt, Mark Lehmstedt

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Leipziger Jahrbuch zur Buchgeschichte

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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.