John Blofeld Books

I Ching, the Chinese book of change

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Investigations under Sections 164 and 165(b) of the Companies Act 1948

By Blofeld John.

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The I Ching, probably the oldest book in existence, provides a system of knowledge that makes it possible to analyze the patterns of changes in life governed by the Immutable Law of Change. Whether...

Gateway to wisdom

By John Eaton Calthrope Blofeld

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The Zen Teaching of Huang Po

By Huang Po

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Taoist Mysteries and Magic

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Gateway to wisdom

By John Eaton Calthrope Blofeld

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Ngoc sang trong hoa sen.

By Nguyen Phong.

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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.