William Jaspersohn Books

My Baseball Book A Write in Me Book

By Bill Jaspersohn, William Jaspersohn, Tom Ettinger

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A Day in the Life of a Television News Reporter

By William Jaspersohn

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Follows television news reporter Dan Rea of WBZ-TV in Boston as he covers his regular assignment.

A Day in the Life of a Marine Biologist

By William Jaspersohn

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Follows a day in the life of marine biologist Dr. Arthur Humes, who has discovered new ocean animals in Earth's major bodies of water.

How life on Earth began

By William Jaspersohn

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Explains how life first appeared on the earth as simple cells capable of reproducing themselves and then evolved into a series of more complex organisms.

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.