Hardy James D. Books

Critical surgical illness.

By Hardy James D.

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Light of my life

By Hardy James D.

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"This critical work examines the themes of Lolita and places the novel in its proper biographical, social, cultural and historical contexts. Of particular interest are questions of love in all of i...

The world of surgery, 1945-1985

By Hardy James D.

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The New York Giants base ball club

By Hardy James D.

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""Excellent"--Nine; "wonderful"--SABR Bibliography Committee Newsletter. No team better exemplified baseball in the 19th century than the New York Giants. They were one of the league's premier team...

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.