David Hubbard Books

To celebrate the 20th Anniversary of Circlet Press, Fantastic Erotica presents the very best erotic science fiction and fantasy short stories published by Circlet in the past five years. Chosen by...

Joel & Amos: Tyndale Old Testament Commentary

By David Allan Hubbard, David Hubbard

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Joel's arresting imagery - blasting trumpet, darkened sun and marching hosts - has shaped the church's eschatological vision of a day of wrath. Amos's ringing indictments - callous oppression, hear...

Notes from Blue Mountain Beach

By David Hubbard

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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.