Robert D. Ballard
Robert D. Ballard is a character in 0 books.
Ghost Liners: Exploring the World's Greatest Lost Ships
ByRobert D. Ballard,Rick Archbold
1997 • 1 Reader • 64 pages
Robert Ballard: Oceanographer Who Discovered the Titanic
ByChristine M. Hill
1998 • 128 pages