TY - BOOK AU - Bailey,Joseph H. AU - Huehnergarth,John ED - National Geographic Society (U.S.) TI - Small inventions that make a big difference SN - 0870444980 : AV - T212 .S63 1984 U1 - 608 19 PY - 1984/// CY - Washington, D.C. PB - National Geographic Society KW - Inventions KW - Juvenile literature KW - Inventors KW - Plastics N1 - Accompanied by "The patent game" (1 sheet [2] p. : col. ill. ; 75 x 49 cm. folded to 25 x 19 cm.); Includes index; Bibliography: p. 101 N2 - Describes how inventors think and work, explains how one invention--plastic--has changed the world, and briefly discusses seventy-five other important inventions, from the jet engine to the potato chip ER -