David Reagan Books

Study Guide to Accompany Psychology

By NAIRNE SMITH LINDSAY

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Wrath and glory

By David R. Reagan

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God s Plan for the Ages The Blueprint of Bible Prophecy

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America the beautiful

By David R. Reagan

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Living on borrowed time

By David R. Reagan

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Describes the Biblical prophecy of Jesus' return to earth, including a prophecy forum of 22 Bible prophecy experts about the signs that indicate the imminent return.

The master plan

By David R. Reagan

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Medicine Show

By Heidi Lampietti, Gerand Jones, Dominick Cancilla, Dan Barlow, Mikal Trimm, Ekaterina Sedia, David Reagan, Nicole Kimberling, Shawn Feakins, Heidi Cyr, M.K. Hobson, C.L. Russo

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Medicine Show is set is Europe in the aftermath of World War I, and follows the adventures of Professor Bernhard Freedomhowler's Internationally Acclaimed Traveling Exhibition of Medicinal Wonderme...

El Plan Supremo

By David Reagan

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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.