TY - BOOK ED - National Geographic Society (U.S.) TI - Why on earth? SN - 0870447017 : AV - Q163 .W494 1988 U1 - 500 19 PY - 1988/// CY - [Washington, D.C.] PB - National Geographic Society KW - Science KW - Miscellanea KW - Juvenile literature KW - Questions and answers N1 - Includes index N2 - Questions and answers present information on science topics, including human physiology, animal behavior, earth science, and natural science UR - http://www.archive.org/details/whyonearth00nati UR - http://www.openlibrary.org/books/OL2048208M ER -