Orville Adalbert Derby
Orville Adalbert Derby (Portuguese pronunciation: [ˈɔʁviw ˈdɛʁbi]; July 23, 1851 in Kelloggsville, New York – November 27, 1915) was an American geologist who worked in Brazil.
Orville Adalbert Derby (Portuguese pronunciation: [ˈɔʁviw ˈdɛʁbi]; July 23, 1851 in Kelloggsville, New York – November 27, 1915) was an American geologist who worked in Brazil.