Phyllis Jean Perry Books

365 Science Projects Activities

By Phyllis J. Perry

Average: 0.00, 0 Ratings

Speaking ill of the dead

By Phyllis Jean Perry

Average: 0.00, 0 Ratings

"Speaking Ill of the Dead: Jerks in Colorado History" features seventeen short profiles of notorious bad guys, perpetrators of mischief, visionary if misunderstood thinkers, and other colorful anti...

365 science projects activities

By Phyllis Jean Perry

Average: 0.00, 0 Ratings

Science companion for library, school, and home

By Phyllis Jean Perry

Average: 0.00, 0 Ratings

Let's learn about mushrooms

By Phyllis Jean Perry

Average: 0.00, 0 Ratings

Introduces the characteristics and uses of a variety of mushrooms and discusses some of the beliefs and customs connected with this plant family.

A look at Colorado

By Phyllis Jean Perry

Average: 0.00, 0 Ratings

An introduction to the geography, natural and human resources, and history of Colorado.

A look at Colorado

By Phyllis Jean Perry

Average: 0.00, 0 Ratings

SOS the Substitute s Own Survival Guide

Average: 0.00, 0 Ratings

Jazz Up Your Journal Writing

Average: 0.00, 0 Ratings

Reading activities & resources that work

By Phyllis Jean Perry

Average: 0.00, 0 Ratings

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.