John Michael Hayes Books

The children's hour

Average: 0.00, 0 Ratings

When teachers at an exclusive girls school discipline a vindictive girl, she slanderously accuses them of lesbianism and the teachers find that the lie is hard to disprove.

The Man Who Knew Too Much VHS

By Charles Bennett, Herbert Coleman, Alfred Hitchcock, Robert Burks, John Michael Hayes, D.B. Wyndham Lewis, Angus MacPhail

Average: 0.00, 0 Ratings

The Trouble With Harry VHS

By Herbert Coleman, Alfred Hitchcock, Jack Trevor Story, Robert Burks, John Michael Hayes, Alma Macrorie

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.