Lisl Singer Books

Making The Most Of Your Memory: Practical Memory Exercises For All Ages

By George Singer, Lisl Singer

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Towards The Greater Enjoyment Of Later Life

By George Singer, Lisl Singer

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Companion to three programs for professionals and members of the public involved in coping with and making the most of, retirement and the later years of life. This workbook covers topics ranging f...

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.