John Polywka Books

Programming Of Computer Numerically Controlled Machines

By Ken Evans, John Polywka, Stanley Gabrel, Second Edition By Ken Evans, John Polywka And Stanley Gabrel

Average: 0.00, 0 Ratings

Provides full descriptions of all programming functions and their practical applications in three sections: one that teaches the programming of CNC turning centers, another that covers programming...

Programming Of Computer Numerically Controlled Machines

By Ken Bannister, Ken Evans, John Polywka, Evans, Stanley Gabrel, Second Edition By Ken Evans, John Polywka And Stanley Gabrel

Average: 0.00, 0 Ratings

Provides full descriptions of all programming functions and their practical applications in three sections: one that teaches the programming of CNC turning centers, another that covers programming...

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.