TY - BOOK AU - Medina,Nico AU - Groff,David TI - What was the Ice Age? T2 - What was...? SN - 9780399543913 AV - QE697 .M485 2017 U1 - 551.7/92 23 PY - 2017///] CY - New York PB - Penguin Workshop KW - Glacial epoch KW - Juvenile literature KW - Ice age KW - sears N1 - Includes bibliographical references (page 108); 5.1; 3-6; 840L; Lexile N2 - An overview of the world as it 20,000 years ago when glaciers covered the earth and creatures, now extinct, like the woolly mammoths and saber-toothed cats battled to survive ER -