Alan C. Lloyd Books

Typing Seventy-Five: Professional

By Et Al, A. C. Lloyd

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Typing 75, keyboard

By Alan C. Lloyd

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Personal Typing

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A text providing a complete one-semester course in typewriting for students who plan to use their typing skill for personal rather than vocational use.

Typing 1: General Course

By Alan C. Lloyd, A. C. Lloyd

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Typing 1: General course, learning guides and working papers

By Alan C. Lloyd

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Typing 2: Advanced Course

By Et Al, A. C. Lloyd

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Typing One and Two: Teacher's Manual and Key

By Alan Lloyd

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Gregg Typing for Colleges, Complete Course, Lessons 1-225

By A. C. Lloyd

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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.