Robert Hirschfeld Books

Goalkeeper in Charge

By Matt Christopher

Average: 0.00, 0 Ratings

Goalkeeper in Charge Matt Christopher Sports Fiction

By Matt Christopher

Average: 0.00, 0 Ratings

Inline Skater

By Robert Hirschfeld, Matt Christopher

Average: 0.00, 0 Ratings

Cris must choose between "aggro" skating and roller hockey, which also means choosing between his old friends and some new ones.

Inline Skater

By Matt Christopher

Average: 0.00, 0 Ratings

Wheel Wizards

By Matt Christopher

Average: 0.00, 0 Ratings

Angry and unhappy because he is now in a wheelchair and apparently no longer able to play basketball, twelve-year-old Seth is amazed to discover wheelchair basketball and finds that his life is not...

Body Check

By Robert Hirschfeld, Matt Christopher

Average: 0.00, 0 Ratings

Twelve-year-old Brent Mullen discovers that the new assistant hockey coach is teaching the defensemen on his team illegal moves to help them win at any cost.

Attack of the Living Mask Choose Your Own Adventure R

By Robert Hirschfeld, Edward Packard

Average: 0.00, 0 Ratings

Wheel Wizards Matt Christopher Sports Classics

By Christopher Matt Hirschfeld Robert

Average: 0.00, 0 Ratings

Poissons Rouges

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.