John T. Welch Books

Fluorine in bioorganic chemistry

By John T. Welch

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Fluorine Containing Synthons

By Vadim A. Soloshonok

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Fluorinated heterocycles

By Andrei A. Gakh

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"This is the first book in its class solely devoted to fluorinated heterocyclic compounds. It encompasses all aspects of chemistry and applications of fluoroheterocycles including synthesis, biolog...

Current Fluoroorganic Chemistry

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Selective Fluorination in Organic and Bioorganic Chemistry

By John T. Welch

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Everything Was Everything Is

By John T. Welch

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Everything Was Everything Is

By John T. Welch

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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.