Robert J. Ringer Books

To be or Not to be Intimidated That is the Question

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To be or not to be intimidated?

By Robert J. Ringer

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Action

By Robert J. Ringer, Robert Ringer

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Winning through intimidation

By Robert J. Ringer

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Why, after more than three decades, is Winning through Intimidation still one of the most talked about personal-development books of all time? Because it teaches you, in straightforward, easy-to-un...

Million Dollar Habits

By Robert Ringer

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Leistungsbereich 684. Blitzschutzanlagen. Mit Preisen in Euro.

By Robert J. Ringer

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Wei zi ji zhuo xiang

By Robert J. Ringer

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Sea el numero uno

By Robert J. Ringer

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Lo Que Toda Mujer Debe Saber

By Joyce Brothers

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Rasyonel bir yasamin 7 prensibi

By Robert J. Ringer

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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.