Sheila HirtleMarq de Villers and Sheila Hirtle are co-authors of Sahara: The Extraordinary History of the World's Largest Desert and several other books on exploration, history, politics, and travel. Water: The Fate of Our Most Precious Resource by Marq de Villies won the prestigious Governor General's Award in Canada. De Villiers and Hirtle live in Lunenburg, Nova Scotia. Read More Read Less
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