Joel D. Block Books

Sex Over 50

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There are 78 million people now crossing the 50-year mark, and they're redefining middle age and creating a new vision of what a fulfilling sex life means. Sex Over 50 speaks to this legion of grac...

Secrets of Better Sex

By Joel D. Block

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Sex Over 50

By Joel D. Block

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Sex Over 50

By Joel D. Block

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Sex Over 50 (Updated and Expanded)

By Joel D. Block

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Sex Over 50 Updated and Expanded

By Joel D. Block

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Real Reasons Men Commit

By Joel D. Block, Kimberly Dawn Neumann

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Sex Comes First

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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.