Gerald Jensen Books

Invest With The Fed: Maximizing Portfolio Performance By Following Federal Reserve Policy

By Robert Johnson, Gerald R. Jensen, Luis Garcia-Feijóo, Robert R. Johnson, Gerald Jensen, Robert R. Johnson; Gerald R. Jensen; Luis Garcia-Feijoo

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A research-based portfolio strategy that uses Fed signals to forecast security market performance It's often said that the chairman of the Fed is the second most powerful person in the world, next...

Early American dollhouse miniatures

By Gerald Jensen

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Early American dollhouse miniatures

By Gerald Jensen

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Buildings in miniature

By Gerald Jensen

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Buildings in miniature

By Gerald Jensen

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Investments

By Charles P. Jones, Gerald Jensen

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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.