Douglas Valder Duff
![Douglas V. Duff](https://upload.wikimedia.org/wikipedia/commons/6/61/DouglasDuff_001.jpg)
Douglas was the eldest son of Arthur Joseph Duff, then British Consul in Rosario, and Florence Valder.
Duff served in the Merchant Navy during World War I, and survived being torpedoed on two occasions. He later rescued White Russian refugees from the Black Sea, spent time as an apprentice monk, served as a 'Black and Tan' during the counter-insurgency in Ireland, and joined the Palestine Police. After further naval service in World War II, he became a successful broadcaster. Provided by Wikipedia
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The school leader's guide to building and sustaining math success / / Marian Small and Douglas Duff.
Published: [2018]
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