TY - BOOK AU - Jones,Charlotte Foltz AU - O'Brien,John TI - Mistakes that worked SN - 0385262469 AV - T48 .J66 1991 U1 - 609 20 PY - 1991/// CY - New York PB - Doubleday KW - Inventions KW - Juvenile literature N1 - Includes bibliographical references N2 - Presents the stories behind forty things that were invented or named by accident, including aspirin, X-rays, frisbees, silly putty, and velcro ER -