Robert J. Randisi Books

Bullets and lies

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When former Pinkerton Talbot Roper receives a job offer from an ailing Civil War veteran whose Medal of Honor is about to be revoked, he agrees to help his fellow serviceman. Some believe that Howa...

The Eyes Still Have It

By Robert J. Randisi

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First appearances of classic private eyes

By Robert J. Randisi

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First cases volume 2

By Robert J. Randisi

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The Private Eye Writers of America Presents

By Various

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Mystery Street

By Various

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First Cases

By Various

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Most Wanted

By Various

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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.