Gerda R. Wekerle Books

Safe cities

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Ordinary people are natural experts on safety in their own communities, write Gerda Wekerle and Carolyn Whitzman in this important new book. The key to creating a city where people feel safe, they...

Safe Cities

By Gerda R. Wekerle, Carolyn Whitzman

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New Space for Women

By Gerda R. Wekerle

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New Space for Women

By Gerda R. Wekerle

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New Space for Women

By Gerda R. Wekerle

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New Space for Women

By Gerda R. Wekerle

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New space for women

By Rebecca Peterson, Gerda R. Wekerle, C. D. Morley

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Oak Ridges Moraine Battles

By Gerda R. Wekerle, Liette Gilbert, L. Anders Sandberg

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Oak Ridges Moraine Battles

By Gerda R. Wekerle, Liette Gilbert, L. Anders Sandberg

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"The Oak Ridges Moraine is a unique landform that generated heated battles over the future of nature conservation, sprawl, and development in the Toronto region at the turn of the twenty-first cent...

New Space for Women

By Gerda R. Wekerle

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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.