George William Duncan: список всех книг (5)
John Duncan Quackenbos, John S. Newberry, Charles H. Hitchcock, W. Le Conte Stevens, Henry Gannett, William H. Dall, C. Hart Merriam, Nathaniel L. Britton, George F. Kunz, George M. Stoney
Joseph Kay, John William Mansfield, George William Duncan
Lawton Bryan Evans, Luther Noble Duncan, George William Duncan
2018