TY - BOOK AU - Ross,Stewart AU - Biesty,Stephen TI - Into the unknown: how great explorers found their way by land, sea, and air SN - 9780763649487 AV - G175 .R7 2011 U1 - 910.9 22 PY - 2011/// CY - Somerville, Mass. PB - Candlewick Press KW - Explorers KW - Juvenile literature KW - Discoveries in geography ER -