Rock Brynner Books

Yul: The Man Who Would be King

By Rock Brynner

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The ballad of habit and accident

By Rock Brynner

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"It is 1998, the year of El Nino and the White House scandals. It is also Doomsday minus forty years, according to renowned NASA scientist Dr. Roger Belacqua. When Terry Bancroft, a young assistant...

Dark Remedy

By Trent Stephens, Rock Brynner, Trent D. Stephens

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"Thalidomide. The word alone evokes horror from those who recall the epidemic of birth defects that swept the world in the early 1960s: Thousands of women took the "safe" new drug as a sleep aid or...

Dark Remedy

By Rock Brynner, Trent D. Stephens

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Yul

By Rock Brynner

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Empire & odyssey

By Rock Brynner

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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.