John C. Boland Books

Rich man's blood

By John C. Boland

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Death in Jerusalem

By John C. Boland

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The margin

By John C. Boland

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Wall Street s Insiders

By Douglas Frantz, John C. Boland

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Hominid

By John C. Boland

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Archaeologist David Isaac joins a team excavating a crypt on a remote island where a colonial-era family lies buried. By local lore, the family were "devils." The expedition's leader hopes to reviv...

Hominid

By John C. Boland

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The man who knew Brecht

By John C. Boland

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The Lake Rehoboth Community in Connecticut--originally a Jewish summer camp now home to a mix of old-line Commies, red-diaper babies, and more recent Russian émigrés--serves as the backdrop for thi...

Death In Jerusalem

By John C. Boland

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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.