Volker Welter Books

Verwandtschaftsterminologie und Sozialorganisation. Einige ethnosoziologische Interpretationen der Crow Omaha-Systeme

By Volker Welter

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The City After Patrick Geddes

By Volker M. Welter

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Biopolis: Patrick Geddes and the City of Life

By Volker M. Welter

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"The Scottish urbanist and biologist Patrick Geddes (1854-1932) is perhaps best known for introducing the concept of the "region" to architecture and planning. At the turn of the twentieth century,...

Biopolis

By Volker M. Welter

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An examination of the work and influence of Scottish urban planner and theorist Patrick Geddes.The Scottish urbanist and biologist Patrick Geddes (1854-1932) is perhaps best known for introducing t...

Ernst L. Freud und das Landhaus Frank

By Volker Welter

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The City After Patrick Geddes

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Biopolis

By Volker M. Welter, Iain Boyd Whyte

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Ernst L. Freud architect

By Volker Welter

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Ernst L. Freud, architect

By Volker Welter

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Ernst L. Freud Architect

By Volker M. Welter

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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.