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![Cover for David L. Gray · Case Studies in 21st Century School Administration: Addressing Challenges for Educational Leadership (Paperback Book) [New edition] (2007)](https://imusic.b-cdn.net/images/item/original/536/9781412927536.jpg?david-l-gray-2007-case-studies-in-21st-century-school-administration-addressing-challenges-for-educational-leadership-paperback-book&class=scaled&v=1416909614)