James U. Blanchard Books

Cash Book: High Yields With Safety, 1992-'93: High Yield, Low Risk Cash Investments

By James U. Blanchard

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Silver bonanza

By James U. Blanchard

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We are now facing the greatest opportunity to make big profits in silver since the bull market that saw silver soar from $1.50 an ounce in the 1970s to a peak of $50 in 1980. And now, with demand o...

The cash book

By James U. Blanchard

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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.