01396nam a2200349Ia 4500 104059 BIBL 20160527181552.0 911126s1992 mdua j b 001 0ceng 91044193 /AC 0805021337 (OCoLC)25051116 DLC DLC n-us--- PUXA T39 .H39 1992 509.2/273 B 20 Hayden, Robert C. 233556 Local 9 African-American inventors Robert C. Hayden ; [portrait illustrations by Richard Loehle]. Frederick, Md. Twenty-First Century Books c1992. 169 p. ill. 23 cm. Achievers--African Americans in science and technology Includes index. Chronicles the achievements of nine Afro-Americans responsible for inventions related to important parts of modern life such as refrigeration, electric lighting, and transportation. Afro-American inventors. United States Biography Juvenile literature. 49658 Local Afro-Americans Biography. 49670 Local Inventors 115893 Local Loehle, Richard ill. 247180 Local Nine African-American inventors. African-American inventors. Hayden, Robert C. Achievers--African American in science and technology. 86232 86232 0 0 0 926_080000000000000_H416N 0 evref 9294 10 10 9 2016-05-27 160476 0 926.08 H416n 80000000884760 2016-05-27 00:00:00 r:104059 z:NCC:D 9