TY  - BOOK
AU  - Joseph H.Bailey
AU  - John Huehnergarth
ED  -  National Geographic Society
ED  - National Geographic Society (U.S.)
TI  - Small inventions that make a big difference
SN  - 0870444980 
U1  - 608 19
PY  - 1984///
CY  - Washington, D.C.
PB  - National Geographic Society
KW  - Inventions
KW  - Juvenile literature
KW  - اختراعات
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  -