1947199
9781578861323
Donald D. Clifton served as chairman of the Gallup Organization from 1969 to 2000. In 2000, he became chairman of the Gallup International Research and Education Center.O'Hanlon, James is the author of 'Effective Principals Positive Principles at Work', published 2004 under ISBN 9781578861323 and ISBN 1578861322.
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