Robert Ballard: Oceanographer who discovered the Titanic/
Hill, Christine M.
Robert Ballard: Oceanographer who discovered the Titanic/ - Berkeley Heights[NJ]: Enslow Publishing, 1999. - 128 pgs. - (People to Know) .
076601147X
9854437
Ballard, Robert D.
Oceanographers.
Titanic.
Robert Ballard: Oceanographer who discovered the Titanic/ - Berkeley Heights[NJ]: Enslow Publishing, 1999. - 128 pgs. - (People to Know) .
076601147X
9854437
Ballard, Robert D.
Oceanographers.
Titanic.