TY - BOOK AU - Pletcher,Kenneth TI - Explorers in the 20th and 21st centuries: from Auguste Piccard to James Cameron T2 - Britannica guide to explorers and adventurers SN - 9781622750221 AV - G 200 .Ex74a 2014 PY - 2014/// CY - New York PB - Britannica Educational Pub. in association with Rosen Educational Services KW - Explorers KW - Biography KW - Juvenile literature KW - Discoveries in geography N1 - Includes bibliographical references (pages 200-2020 and index ER -