Carlo Knopfel Books

Armutsbekampfung durch Schuldenpravention

By Christoph Mattes, Carlo Knopfel

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Der Einfluss der politischen Stabilitat auf die internationale Wettbewerbsfahigkeit der Schweiz

By Carlo Knopfel

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Working Poor in der Schweiz--Wege aus der Sozialhilfe

By Mader Ueli D1951, Stefan Kutzner, Carlo Knopfel

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Gute Betreuung im Alter in der Schweiz

By Carlo Knopfel

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Apart from financing retirement provision, assistance and care for elderly people ist he central issue in Swiss politics concerning elderly people. While medical care has been in focus of the disco...

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.