Peter Aimer Books

Voters' vengeance

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The 1990 election produced New Zealand's most dramatic parliamentary transformation for over fifty years. Labour plunged from 56 seats to 29, while National rose from 41 to 67. Rubbing salt into La...

Toward Consensus

By Peter Aimer

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Proportional Representation on Trial

By Jack Vowles, Peter Aimer, Susan Banducci, Jeffrey Karp

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Wings of the nation

By Peter Aimer

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Politics, power and persuasion

By Peter Aimer

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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.