When China ruled the seas : the treasure fleet of the Dragon Throne, 1405-1433 /
Levathes, Louise.
New York ; Oxford : Oxford University Press,
1996, c1994.
Originally published: New York ; London : Simon & Schuster, 1994
Includes bibliography and index
Zheng, He, 1371-1435.
Naval art and science
Discoveries in geography.
Explorers