Bruce Koscielniak Books

Geoffrey Groundhog Predicts the Weather

By Bruce Koscielniak

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Story of the Incredible Orchestra

By Bruce Koscielniak

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Johann Gutenberg and the Amazing Printing Press

By Bruce Koscielniak

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A history of the modern printing industry, including how paper and ink are made, looking particularly at the printing press invented by Gutenberg around 1450 but also at its precursors.

The Story of the Incredible Orchestra

By Bruce Koscielniak

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About time

By Bruce Koscielniak

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Describes the concept of time and how it has been measured throughout history, using water clocks, sundials, calendars, and atomic vibrations.

Looking at glass through the ages

By Bruce Koscielniak

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Hector and Prudence--all aboard!

By Bruce Koscielniak

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Hector and Prudence and all their piglets set up the toy train under the Christmas tree and go for an unusual ride.

Bear and Bunny grow tomatoes

By Bruce Koscielniak

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A hard-working bear and a lazy bunny both plant tomatoes in their gardens, with quite different results.

Hector and Prudence--all aboard!

By Bruce Koscielniak

Average: 0.00, 0 Ratings

Hector and Prudence and all their piglets set up the toy train under the Christmas tree and go for an unusual ride.

Bear and Bunny grow tomatoes

By Bruce Koscielniak

Average: 0.00, 0 Ratings

A hard-working bear and a lazy bunny both plant tomatoes in their gardens, with quite different results.

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.