Harvey Bullock Books

Noah's ark

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Three friends on the site of an archeological dig travel back in time and meet Noah, who is building his ark in preparation for the coming flood.

How To Cheat On Yr Di

By Harvey Bullock

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David and Goliath

By Christine L. Benagh

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Three friends on the site of an archeological dig travel back in time and become involved with the shepherd boy David's battle against the Philistines and the giant Goliath.

The Nativity VHS

By Harvey Bullock, Millard Kaufman, Gabor Pogany, Jerry Dronsky, R.S. Allen, William P. D Angelo, Morton S. Fine

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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.