Robert E. Petras Books

Cellar Door Volume II

By Gary Murphy, Kevin Rodgers, Dale Hollin, James Ward Kirk, Mathias Jansson, Robert E. Petras, DJ Tyrer, Patrick Lacey, Alex S. Johnson, Niall Parkinson, James Ward Kirk, Niall Parkinson, Patrick Lacey, DJ Tyrer, Dale Hollin, Gary Murphy, Alex S. Johnson, Mathias Jansson, Kevin Rodgers, Robert E. Petras

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Haiku Of The Dead

By KR Smith, Cathy Bryant, Sonja Johanson, Jennifer Courtney, Chris Fradkin, Robert E. Petras, Fanni Süto, Jason Kirk, Laura Huntley, Pattie Flint, David Nell, Sarah Winn, Seth Frederiksen, Clarice Radrick, David S. Pointer, Jessica Mchugh, Winston H. Plowes, Colin M Drysdale, Donald Raymond, Nick Johns, Tim McLaferty

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Poetry To Eat Your Brains. Haiku Of The Dead Is An Anthology That Pieces Together A Warm-hearted Story Of Guts And Gore. Told Through The Imagistic Language Of Haiku, Every Flesh-ripping Moment Of...

Devolution Z September 2015: The Horror Magazine

By G. O. Clark, T. Fox Dunham, Charles Robertson, Samuel Rabelais, Ben Howels, Kevin Wetmore, Robert E. Petras, Alarick Vaughan, K. I. Borrowman, A.P. Sessler, Lizz-Ayn Shaarawi, Jeffrey Todd, Brian H. Seitzman, Devolution Z

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Locust People

By Robert E. Petras

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Locust People

By Robert E. Petras

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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.