Ernest Dudley Books

There are few cases of Dr. Morelle, the famous criminal investigator, where his secretary Miss Frayle doesn't come to the forefront of the picture. Indeed, eminent friends of the Doctor's have said...

Dr. Morelle s casebook

By Ernest Dudley

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After a spate of time-wasting telephone calls, the Doctor had told Miss Frayle not to bother him with them; she must dismiss the callers and leave him to work on his thesis. But when the telephone...

The private eye

By Ernest Dudley

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Ernest Dudley, creator of that superb pair of sleuths, Dr. Morelle and Miss Frayle, here introduces another vivid character, Nat Craig, whose methods as London's foremost private investigator are u...

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.