David Thenuwara Gamage Books

Professional Development for Leaders and Managers of Self Governing Schools

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Today, the self-governing schools (SGS) have become a global phenomenon. It has liberated school heads from the bureaucratic shackles, making them leaders in their own right. Accordingly, the princ...

Decentralisation school based management and quality

By Joseph I. Zajda, David Thenuwara Gamage

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Text explores the relationship between government, education reform (decentralization and comparative education) and student outcomes. Issues covered include globalization, ideology, and democracy...

Decentralisation, school-based management, and quality

By Joseph I. Zajda, David Thenuwara Gamage

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Text explores the relationship between government, education reform (decentralization and comparative education) and student outcomes. Issues covered include globalization, ideology, and democracy...

Evolution of universities and changing patterns of governance and administration

By David Thenuwara Gamage

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Study, with special reference to Sri Lanka.

Educational Leadership and Management

By Nicholas S. K. Pang, David Gamage, David Thenuwara Gamage

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Professional Development for Leaders and Managers of Self Governing Schools

By David Gamage

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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.