The Sierra Leone Diamonds; An Economic Study Covering the Years 1952-1961 By Laan, H. L. van der Books / Hardcover History: World › Africa Publisher: Oxford University Press, January 1965 Price $50.98 Free Shipping Send to a friend Collectible - Acceptable First Edition First edition copy. Collectible - Acceptable. Book Good. No dust jacket. (Sierra Leone, diamond mines and mining) $50.98 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.