Reading Expeditions (Science: Scientists in the Field): Robert Ballard: Discovering Underwater Treasures, 6-pack

Overview

6 copies of Robert Ballard: Discovering Underwater Treasures. Underwater explorer Robert Ballard discovered the shipwrecked Titanic in 1985, but he didn't stop there. Ballard is still searching the seas. He uses high-tech tools to locate and investigate the sunken remains of ancient sailing ships in the Black Sea. See how his long list of underseas explorations has added to our understanding of the past.